// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/frame_host/render_frame_host_impl.h"

#include <algorithm>
#include <utility>

#include "base/bind.h"
#include "base/command_line.h"
#include "base/containers/hash_tables.h"
#include "base/containers/queue.h"
#include "base/debug/alias.h"
#include "base/feature_list.h"
#include "base/lazy_instance.h"
#include "base/memory/ptr_util.h"
#include "base/memory/ref_counted.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/metrics_hashes.h"
#include "base/metrics/user_metrics.h"
#include "base/numerics/safe_conversions.h"
#include "base/process/kill.h"
#include "base/task_scheduler/post_task.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "cc/base/switches.h"
#include "content/browser/accessibility/browser_accessibility_manager.h"
#include "content/browser/accessibility/browser_accessibility_state_impl.h"
#include "content/browser/bluetooth/web_bluetooth_service_impl.h"
#include "content/browser/browser_main_loop.h"
#include "content/browser/child_process_security_policy_impl.h"
#include "content/browser/dedicated_worker/dedicated_worker_host.h"
#include "content/browser/devtools/render_frame_devtools_agent_host.h"
#include "content/browser/dom_storage/dom_storage_context_wrapper.h"
#include "content/browser/download/mhtml_generation_manager.h"
#include "content/browser/file_url_loader_factory.h"
#include "content/browser/frame_host/cross_process_frame_connector.h"
#include "content/browser/frame_host/debug_urls.h"
#include "content/browser/frame_host/frame_tree.h"
#include "content/browser/frame_host/frame_tree_node.h"
#include "content/browser/frame_host/input/input_injector_impl.h"
#include "content/browser/frame_host/keep_alive_handle_factory.h"
#include "content/browser/frame_host/navigation_entry_impl.h"
#include "content/browser/frame_host/navigation_handle_impl.h"
#include "content/browser/frame_host/navigation_request.h"
#include "content/browser/frame_host/navigator.h"
#include "content/browser/frame_host/navigator_impl.h"
#include "content/browser/frame_host/render_frame_host_delegate.h"
#include "content/browser/frame_host/render_frame_proxy_host.h"
#include "content/browser/generic_sensor/sensor_provider_proxy_impl.h"
#include "content/browser/geolocation/geolocation_service_impl.h"
#include "content/browser/image_capture/image_capture_impl.h"
#include "content/browser/installedapp/installed_app_provider_impl_default.h"
#include "content/browser/interface_provider_filtering.h"
#include "content/browser/keyboard_lock/keyboard_lock_service_impl.h"
#include "content/browser/loader/prefetch_url_loader_service.h"
#include "content/browser/loader/resource_dispatcher_host_impl.h"
#include "content/browser/loader/resource_scheduler_filter.h"
#include "content/browser/media/capture/audio_mirroring_manager.h"
#include "content/browser/media/media_interface_proxy.h"
#include "content/browser/media/session/media_session_service_impl.h"
#include "content/browser/payments/payment_app_context_impl.h"
#include "content/browser/permissions/permission_service_context.h"
#include "content/browser/permissions/permission_service_impl.h"
#include "content/browser/presentation/presentation_service_impl.h"
#include "content/browser/quota_dispatcher_host.h"
#include "content/browser/renderer_host/dip_util.h"
#include "content/browser/renderer_host/input/input_router.h"
#include "content/browser/renderer_host/input/timeout_monitor.h"
#include "content/browser/renderer_host/media/audio_input_delegate_impl.h"
#include "content/browser/renderer_host/media/media_devices_dispatcher_host.h"
#include "content/browser/renderer_host/media/media_stream_dispatcher_host.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/renderer_host/render_view_host_delegate.h"
#include "content/browser/renderer_host/render_view_host_delegate_view.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_delegate.h"
#include "content/browser/renderer_host/render_widget_host_factory.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_view_base.h"
#include "content/browser/renderer_host/render_widget_host_view_child_frame.h"
#include "content/browser/renderer_interface_binders.h"
#include "content/browser/scoped_active_url.h"
#include "content/browser/shared_worker/shared_worker_connector_impl.h"
#include "content/browser/shared_worker/shared_worker_service_impl.h"
#include "content/browser/speech/speech_recognition_dispatcher_host.h"
#include "content/browser/storage_partition_impl.h"
#include "content/browser/webauth/authenticator_impl.h"
#include "content/browser/webauth/scoped_virtual_authenticator_environment.h"
#include "content/browser/websockets/websocket_manager.h"
#include "content/browser/webui/url_data_manager_backend.h"
#include "content/browser/webui/web_ui_controller_factory_registry.h"
#include "content/browser/webui/web_ui_url_loader_factory_internal.h"
#include "content/common/accessibility_messages.h"
#include "content/common/associated_interface_provider_impl.h"
#include "content/common/associated_interface_registry_impl.h"
#include "content/common/associated_interfaces.mojom.h"
#include "content/common/content_security_policy/content_security_policy.h"
#include "content/common/frame_messages.h"
#include "content/common/frame_owner_properties.h"
#include "content/common/input/input_handler.mojom.h"
#include "content/common/inter_process_time_ticks_converter.h"
#include "content/common/navigation_params.h"
#include "content/common/navigation_subresource_loader_params.h"
#include "content/common/render_message_filter.mojom.h"
#include "content/common/renderer.mojom.h"
#include "content/common/swapped_out_messages.h"
#include "content/common/url_loader_factory_bundle.mojom.h"
#include "content/common/widget.mojom.h"
#include "content/public/browser/ax_event_notification_details.h"
#include "content/public/browser/browser_accessibility_state.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_plugin_guest_manager.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/permission_manager.h"
#include "content/public/browser/permission_type.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/stream_handle.h"
#include "content/public/browser/webvr_service_provider.h"
#include "content/public/common/bindings_policy.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/file_chooser_file_info.h"
#include "content/public/common/file_chooser_params.h"
#include "content/public/common/isolated_world_ids.h"
#include "content/public/common/service_manager_connection.h"
#include "content/public/common/service_names.mojom.h"
#include "content/public/common/url_constants.h"
#include "content/public/common/url_utils.h"
#include "device/vr/public/mojom/vr_service.mojom.h"
#include "media/audio/audio_manager.h"
#include "media/base/media_switches.h"
#include "media/base/user_input_monitor.h"
#include "media/media_buildflags.h"
#include "media/mojo/interfaces/remoting.mojom.h"
#include "media/mojo/services/media_interface_provider.h"
#include "media/mojo/services/media_metrics_provider.h"
#include "mojo/public/cpp/bindings/associated_interface_ptr.h"
#include "mojo/public/cpp/bindings/message.h"
#include "mojo/public/cpp/bindings/strong_binding.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "services/device/public/cpp/device_features.h"
#include "services/device/public/mojom/sensor_provider.mojom.h"
#include "services/device/public/mojom/wake_lock.mojom.h"
#include "services/device/public/mojom/wake_lock_context.mojom.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/cpp/wrapper_shared_url_loader_factory.h"
#include "services/network/public/mojom/network_service.mojom.h"
#include "services/network/restricted_cookie_manager.h"
#include "services/resource_coordinator/public/cpp/frame_resource_coordinator.h"
#include "services/resource_coordinator/public/cpp/resource_coordinator_features.h"
#include "services/service_manager/public/cpp/connector.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "storage/browser/blob/blob_storage_context.h"
#include "storage/browser/blob/blob_url_loader_factory.h"
#include "third_party/blink/public/common/feature_policy/feature_policy.h"
#include "third_party/blink/public/common/frame/frame_policy.h"
#include "third_party/blink/public/mojom/page/page_visibility_state.mojom.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_object.mojom.h"
#include "third_party/blink/public/platform/modules/webauth/virtual_authenticator.mojom.h"
#include "ui/accessibility/ax_tree.h"
#include "ui/accessibility/ax_tree_id_registry.h"
#include "ui/accessibility/ax_tree_update.h"
#include "ui/gfx/geometry/quad_f.h"
#include "url/gurl.h"
#include "url/origin.h"
#include "url/url_constants.h"

#if defined(OS_ANDROID)
#include "content/browser/android/java_interfaces_impl.h"
#include "content/browser/frame_host/render_frame_host_android.h"
#include "content/public/browser/android/java_interfaces.h"
#endif

#if defined(OS_MACOSX)
#include "content/browser/frame_host/popup_menu_helper_mac.h"
#endif

using base::TimeDelta;

namespace content {

namespace {

#if defined(OS_ANDROID)
const void* const kRenderFrameHostAndroidKey = &kRenderFrameHostAndroidKey;
#endif  // OS_ANDROID

// The next value to use for the accessibility reset token.
int g_next_accessibility_reset_token = 1;

// The next value to use for the javascript callback id.
int g_next_javascript_callback_id = 1;

#if defined(OS_ANDROID)
// Whether to allow injecting javascript into any kind of frame (for Android
// WebView).
bool g_allow_injecting_javascript = false;
#endif

// The (process id, routing id) pair that identifies one RenderFrame.
typedef std::pair<int32_t, int32_t> RenderFrameHostID;
typedef base::hash_map<RenderFrameHostID, RenderFrameHostImpl*>
    RoutingIDFrameMap;
base::LazyInstance<RoutingIDFrameMap>::DestructorAtExit g_routing_id_frame_map =
    LAZY_INSTANCE_INITIALIZER;

base::LazyInstance<RenderFrameHostImpl::CreateNetworkFactoryCallback>::Leaky
    g_create_network_factory_callback_for_test = LAZY_INSTANCE_INITIALIZER;

using TokenFrameMap = base::hash_map<base::UnguessableToken,
                                     RenderFrameHostImpl*,
                                     base::UnguessableTokenHash>;
base::LazyInstance<TokenFrameMap>::Leaky g_token_frame_map =
    LAZY_INSTANCE_INITIALIZER;

// Translate a WebKit text direction into a base::i18n one.
base::i18n::TextDirection WebTextDirectionToChromeTextDirection(
    blink::WebTextDirection dir) {
  switch (dir) {
    case blink::kWebTextDirectionLeftToRight:
      return base::i18n::LEFT_TO_RIGHT;
    case blink::kWebTextDirectionRightToLeft:
      return base::i18n::RIGHT_TO_LEFT;
    default:
      NOTREACHED();
      return base::i18n::UNKNOWN_DIRECTION;
  }
}

// Ensure that we reset nav_entry_id_ in DidCommitProvisionalLoad if any of
// the validations fail and lead to an early return.  Call disable() once we
// know the commit will be successful.  Resetting nav_entry_id_ avoids acting on
// any UpdateState or UpdateTitle messages after an ignored commit.
class ScopedCommitStateResetter {
 public:
  explicit ScopedCommitStateResetter(RenderFrameHostImpl* render_frame_host)
      : render_frame_host_(render_frame_host), disabled_(false) {}

  ~ScopedCommitStateResetter() {
    if (!disabled_) {
      render_frame_host_->set_nav_entry_id(0);
    }
  }

  void disable() { disabled_ = true; }

 private:
  RenderFrameHostImpl* render_frame_host_;
  bool disabled_;
};

void GrantFileAccess(int child_id,
                     const std::vector<base::FilePath>& file_paths) {
  ChildProcessSecurityPolicyImpl* policy =
      ChildProcessSecurityPolicyImpl::GetInstance();

  for (const auto& file : file_paths) {
    if (!policy->CanReadFile(child_id, file))
      policy->GrantReadFile(child_id, file);
  }
}

#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
// RemoterFactory that delegates Create() calls to the ContentBrowserClient.
//
// Since Create() could be called at any time, perhaps by a stray task being run
// after a RenderFrameHost has been destroyed, the RemoterFactoryImpl uses the
// process/routing IDs as a weak reference to the RenderFrameHostImpl.
class RemoterFactoryImpl final : public media::mojom::RemoterFactory {
 public:
  RemoterFactoryImpl(int process_id, int routing_id)
      : process_id_(process_id), routing_id_(routing_id) {}

  static void Bind(int process_id,
                   int routing_id,
                   media::mojom::RemoterFactoryRequest request) {
    mojo::MakeStrongBinding(
        std::make_unique<RemoterFactoryImpl>(process_id, routing_id),
        std::move(request));
  }

 private:
  void Create(media::mojom::RemotingSourcePtr source,
              media::mojom::RemoterRequest request) final {
    if (auto* host = RenderFrameHostImpl::FromID(process_id_, routing_id_)) {
      GetContentClient()->browser()->CreateMediaRemoter(
          host, std::move(source), std::move(request));
    }
  }

  const int process_id_;
  const int routing_id_;

  DISALLOW_COPY_AND_ASSIGN(RemoterFactoryImpl);
};
#endif  // BUILDFLAG(ENABLE_MEDIA_REMOTING)

void CreateFrameResourceCoordinator(
    RenderFrameHostImpl* render_frame_host,
    resource_coordinator::mojom::FrameCoordinationUnitRequest request) {
  render_frame_host->GetFrameResourceCoordinator()->AddBinding(
      std::move(request));
}

using FrameCallback =
    base::RepeatingCallback<void(ResourceDispatcherHostImpl*,
                                 const GlobalFrameRoutingId&)>;

// The following functions simplify code paths where the UI thread notifies the
// ResourceDispatcherHostImpl of information pertaining to loading behavior of
// frame hosts.
void NotifyRouteChangesOnIO(
    const FrameCallback& frame_callback,
    std::unique_ptr<std::set<GlobalFrameRoutingId>> routing_ids) {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
  if (!rdh)
    return;
  for (const auto& routing_id : *routing_ids)
    frame_callback.Run(rdh, routing_id);
}

void NotifyForEachFrameFromUI(RenderFrameHost* root_frame_host,
                              const FrameCallback& frame_callback) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  FrameTree* frame_tree = static_cast<RenderFrameHostImpl*>(root_frame_host)
                              ->frame_tree_node()
                              ->frame_tree();
  DCHECK_EQ(root_frame_host, frame_tree->GetMainFrame());

  auto routing_ids = std::make_unique<std::set<GlobalFrameRoutingId>>();
  for (FrameTreeNode* node : frame_tree->Nodes()) {
    RenderFrameHostImpl* frame_host = node->current_frame_host();
    RenderFrameHostImpl* pending_frame_host =
        node->render_manager()->speculative_frame_host();
    if (frame_host)
      routing_ids->insert(frame_host->GetGlobalFrameRoutingId());
    if (pending_frame_host)
      routing_ids->insert(pending_frame_host->GetGlobalFrameRoutingId());
  }
  BrowserThread::PostTask(
      BrowserThread::IO, FROM_HERE,
      base::BindOnce(&NotifyRouteChangesOnIO, frame_callback,
                     std::move(routing_ids)));
}

void LookupRenderFrameHostOrProxy(int process_id,
                                  int routing_id,
                                  RenderFrameHostImpl** rfh,
                                  RenderFrameProxyHost** rfph) {
  *rfh = RenderFrameHostImpl::FromID(process_id, routing_id);
  if (*rfh == nullptr)
    *rfph = RenderFrameProxyHost::FromID(process_id, routing_id);
}

void NotifyResourceSchedulerOfNavigation(
    int render_process_id,
    const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
  // TODO(csharrison): This isn't quite right for OOPIF, as we *do* want to
  // propagate OnNavigate to the client associated with the OOPIF's RVH. This
  // should not result in show-stopping bugs, just poorer loading performance.
  if (!ui::PageTransitionIsMainFrame(params.transition))
    return;

  BrowserThread::PostTask(
      BrowserThread::IO, FROM_HERE,
      base::BindOnce(&ResourceSchedulerFilter::OnDidCommitMainframeNavigation,
                     render_process_id, params.render_view_routing_id));
}

bool IsOutOfProcessNetworkService() {
  return base::FeatureList::IsEnabled(network::features::kNetworkService) &&
         !base::FeatureList::IsEnabled(features::kNetworkServiceInProcess) &&
         !base::CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kSingleProcess);
}

// Takes the lower 31 bits of the metric-name-hash of a Mojo interface |name|.
base::Histogram::Sample HashInterfaceNameToHistogramSample(
    base::StringPiece name) {
  return base::strict_cast<base::Histogram::Sample>(
      static_cast<int32_t>(base::HashMetricName(name) & 0x7fffffffull));
}

}  // namespace

RenderFrameHostImpl::PendingNavigation::PendingNavigation(
    const CommonNavigationParams& common_params,
    mojom::BeginNavigationParamsPtr begin_params,
    scoped_refptr<network::SharedURLLoaderFactory> blob_url_loader_factory)
    : common_params(common_params),
      begin_params(std::move(begin_params)),
      blob_url_loader_factory(std::move(blob_url_loader_factory)) {}

RenderFrameHostImpl::PendingNavigation::~PendingNavigation() = default;

class RenderFrameHostImpl::DroppedInterfaceRequestLogger
    : public service_manager::mojom::InterfaceProvider {
 public:
  DroppedInterfaceRequestLogger(
      service_manager::mojom::InterfaceProviderRequest request)
      : binding_(this) {
    binding_.Bind(std::move(request));
  }

  ~DroppedInterfaceRequestLogger() override {
    UMA_HISTOGRAM_EXACT_LINEAR("RenderFrameHostImpl.DroppedInterfaceRequests",
                               num_dropped_requests_, 20);
  }

 protected:
  // service_manager::mojom::InterfaceProvider:
  void GetInterface(const std::string& interface_name,
                    mojo::ScopedMessagePipeHandle pipe) override {
    ++num_dropped_requests_;
    base::UmaHistogramSparse(
        "RenderFrameHostImpl.DroppedInterfaceRequestName",
        HashInterfaceNameToHistogramSample(interface_name));
    DLOG(WARNING)
        << "InterfaceRequest was dropped, the document is no longer active: "
        << interface_name;
  }

 private:
  mojo::Binding<service_manager::mojom::InterfaceProvider> binding_;
  int num_dropped_requests_ = 0;

  DISALLOW_COPY_AND_ASSIGN(DroppedInterfaceRequestLogger);
};

// static
RenderFrameHost* RenderFrameHost::FromID(int render_process_id,
                                         int render_frame_id) {
  return RenderFrameHostImpl::FromID(render_process_id, render_frame_id);
}

#if defined(OS_ANDROID)
// static
void RenderFrameHost::AllowInjectingJavaScriptForAndroidWebView() {
  g_allow_injecting_javascript = true;
}
#endif  // defined(OS_ANDROID)

// static
RenderFrameHostImpl* RenderFrameHostImpl::FromID(int process_id,
                                                 int routing_id) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  RoutingIDFrameMap* frames = g_routing_id_frame_map.Pointer();
  RoutingIDFrameMap::iterator it = frames->find(
      RenderFrameHostID(process_id, routing_id));
  return it == frames->end() ? NULL : it->second;
}

// static
RenderFrameHost* RenderFrameHost::FromAXTreeID(
    int ax_tree_id) {
  return RenderFrameHostImpl::FromAXTreeID(ax_tree_id);
}

// static
RenderFrameHostImpl* RenderFrameHostImpl::FromAXTreeID(
    ui::AXTreeIDRegistry::AXTreeID ax_tree_id) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  ui::AXTreeIDRegistry::FrameID frame_id =
      ui::AXTreeIDRegistry::GetInstance()->GetFrameID(ax_tree_id);
  return RenderFrameHostImpl::FromID(frame_id.first, frame_id.second);
}

// static
RenderFrameHostImpl* RenderFrameHostImpl::FromOverlayRoutingToken(
    const base::UnguessableToken& token) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  auto it = g_token_frame_map.Get().find(token);
  return it == g_token_frame_map.Get().end() ? nullptr : it->second;
}

// static
void RenderFrameHostImpl::SetNetworkFactoryForTesting(
    const CreateNetworkFactoryCallback& create_network_factory_callback) {
  DCHECK(!BrowserThread::IsThreadInitialized(BrowserThread::UI) ||
         BrowserThread::CurrentlyOn(BrowserThread::UI));
  DCHECK(create_network_factory_callback.is_null() ||
         g_create_network_factory_callback_for_test.Get().is_null())
      << "It is not expected that this is called with non-null callback when "
      << "another overriding callback is already set.";
  g_create_network_factory_callback_for_test.Get() =
      create_network_factory_callback;
}

RenderFrameHostImpl::RenderFrameHostImpl(SiteInstance* site_instance,
                                         RenderViewHostImpl* render_view_host,
                                         RenderFrameHostDelegate* delegate,
                                         RenderWidgetHostDelegate* rwh_delegate,
                                         FrameTree* frame_tree,
                                         FrameTreeNode* frame_tree_node,
                                         int32_t routing_id,
                                         int32_t widget_routing_id,
                                         bool hidden,
                                         bool renderer_initiated_creation)
    : render_view_host_(render_view_host),
      delegate_(delegate),
      site_instance_(static_cast<SiteInstanceImpl*>(site_instance)),
      process_(site_instance->GetProcess()),
      frame_tree_(frame_tree),
      frame_tree_node_(frame_tree_node),
      parent_(nullptr),
      render_widget_host_(nullptr),
      routing_id_(routing_id),
      is_waiting_for_swapout_ack_(false),
      render_frame_created_(false),
      is_waiting_for_beforeunload_ack_(false),
      unload_ack_is_for_navigation_(false),
      was_discarded_(false),
      is_loading_(false),
      pending_commit_(false),
      nav_entry_id_(0),
      accessibility_reset_token_(0),
      accessibility_reset_count_(0),
      browser_plugin_embedder_ax_tree_id_(ui::AXTreeIDRegistry::kNoAXTreeID),
      no_create_browser_accessibility_manager_for_testing_(false),
      web_ui_type_(WebUI::kNoWebUI),
      pending_web_ui_type_(WebUI::kNoWebUI),
      should_reuse_web_ui_(false),
      has_selection_(false),
      is_audible_(false),
      last_navigation_previews_state_(PREVIEWS_UNSPECIFIED),
      frame_host_associated_binding_(this),
      waiting_for_init_(renderer_initiated_creation),
      has_focused_editable_element_(false),
      active_sandbox_flags_(blink::WebSandboxFlags::kNone),
      document_scoped_interface_provider_binding_(this),
      keep_alive_timeout_(base::TimeDelta::FromSeconds(30)),
      weak_ptr_factory_(this) {
  frame_tree_->AddRenderViewHostRef(render_view_host_);
  GetProcess()->AddRoute(routing_id_, this);
  g_routing_id_frame_map.Get().insert(std::make_pair(
      RenderFrameHostID(GetProcess()->GetID(), routing_id_),
      this));
  site_instance_->AddObserver(this);
  GetSiteInstance()->IncrementActiveFrameCount();

  if (frame_tree_node_->parent()) {
    // Keep track of the parent RenderFrameHost, which shouldn't change even if
    // this RenderFrameHost is on the pending deletion list and the parent
    // FrameTreeNode has changed its current RenderFrameHost.
    parent_ = frame_tree_node_->parent()->current_frame_host();

    // All frames in a page are expected to have the same bindings.
    if (parent_->GetEnabledBindings())
      enabled_bindings_ = parent_->GetEnabledBindings();

    // New child frames should inherit the nav_entry_id of their parent.
    set_nav_entry_id(
        frame_tree_node_->parent()->current_frame_host()->nav_entry_id());
  }

  SetUpMojoIfNeeded();

  swapout_event_monitor_timeout_.reset(new TimeoutMonitor(base::Bind(
      &RenderFrameHostImpl::OnSwappedOut, weak_ptr_factory_.GetWeakPtr())));
  beforeunload_timeout_.reset(
      new TimeoutMonitor(base::Bind(&RenderFrameHostImpl::BeforeUnloadTimeout,
                                    weak_ptr_factory_.GetWeakPtr())));

  if (widget_routing_id != MSG_ROUTING_NONE) {
    mojom::WidgetPtr widget;
    GetRemoteInterfaces()->GetInterface(&widget);

    // TODO(avi): Once RenderViewHostImpl has-a RenderWidgetHostImpl, the main
    // render frame should probably start owning the RenderWidgetHostImpl,
    // so this logic checking for an already existing RWHI should be removed.
    // https://crbug.com/545684
    render_widget_host_ =
        RenderWidgetHostImpl::FromID(GetProcess()->GetID(), widget_routing_id);

    mojom::WidgetInputHandlerAssociatedPtr widget_handler;
    mojom::WidgetInputHandlerHostRequest host_request;
    if (frame_input_handler_) {
      mojom::WidgetInputHandlerHostPtr host;
      host_request = mojo::MakeRequest(&host);
      frame_input_handler_->GetWidgetInputHandler(
          mojo::MakeRequest(&widget_handler), std::move(host));
    }
    if (!render_widget_host_) {
      DCHECK(frame_tree_node->parent());
      render_widget_host_ = RenderWidgetHostFactory::Create(
          rwh_delegate, GetProcess(), widget_routing_id, std::move(widget),
          hidden);
      render_widget_host_->set_owned_by_render_frame_host(true);
    } else {
      DCHECK(!render_widget_host_->owned_by_render_frame_host());
      render_widget_host_->SetWidget(std::move(widget));
    }
    render_widget_host_->SetFrameDepth(frame_tree_node_->depth());
    render_widget_host_->SetWidgetInputHandler(std::move(widget_handler),
                                               std::move(host_request));
    render_widget_host_->input_router()->SetFrameTreeNodeId(
        frame_tree_node_->frame_tree_node_id());
  }
  ResetFeaturePolicy();

  ax_tree_id_ = ui::AXTreeIDRegistry::GetInstance()->GetOrCreateAXTreeID(
      GetProcess()->GetID(), routing_id_);

  // Content-Security-Policy: The CSP source 'self' is usually the origin of the
  // current document, set by SetLastCommittedOrigin(). However, before a new
  // frame commits its first navigation, 'self' should correspond to the origin
  // of the parent (in case of a new iframe) or the opener (in case of a new
  // window). This is necessary to correctly enforce CSP during the initial
  // navigation.
  FrameTreeNode* frame_owner = frame_tree_node_->parent()
                                   ? frame_tree_node_->parent()
                                   : frame_tree_node_->opener();
  if (frame_owner)
    CSPContext::SetSelf(frame_owner->current_origin());
}

RenderFrameHostImpl::~RenderFrameHostImpl() {
  // Destroying |navigation_request_| may call into delegates/observers,
  // so we do it early while |this| object is still in a sane state.
  ResetNavigationRequests();

  // Release the WebUI instances before all else as the WebUI may accesses the
  // RenderFrameHost during cleanup.
  ClearAllWebUI();

  SetLastCommittedSiteUrl(GURL());

  GetProcess()->RemoveRoute(routing_id_);
  g_routing_id_frame_map.Get().erase(
      RenderFrameHostID(GetProcess()->GetID(), routing_id_));

  if (overlay_routing_token_)
    g_token_frame_map.Get().erase(*overlay_routing_token_);

  site_instance_->RemoveObserver(this);

  if (delegate_ && render_frame_created_)
    delegate_->RenderFrameDeleted(this);

  // If this was the last active frame in the SiteInstance, the
  // DecrementActiveFrameCount call will trigger the deletion of the
  // SiteInstance's proxies.
  GetSiteInstance()->DecrementActiveFrameCount();

  // If this RenderFrameHost is swapping with a RenderFrameProxyHost, the
  // RenderFrame will already be deleted in the renderer process. Main frame
  // RenderFrames will be cleaned up as part of deleting its RenderView if the
  // RenderView isn't in use by other frames. In all other cases, the
  // RenderFrame should be cleaned up (if it exists).
  bool will_render_view_clean_up_render_frame =
      frame_tree_node_->IsMainFrame() && render_view_host_->ref_count() == 1;
  if (is_active() && render_frame_created_ &&
      !will_render_view_clean_up_render_frame) {
    Send(new FrameMsg_Delete(routing_id_));
  }

  // Null out the swapout timer; in crash dumps this member will be null only if
  // the dtor has run.  (It may also be null in tests.)
  swapout_event_monitor_timeout_.reset();

  for (const auto& iter : visual_state_callbacks_)
    iter.second.Run(false);

  if (render_widget_host_ &&
      render_widget_host_->owned_by_render_frame_host()) {
    // Shutdown causes the RenderWidgetHost to delete itself.
    render_widget_host_->ShutdownAndDestroyWidget(true);
  }

  // Notify the FrameTree that this RFH is going away, allowing it to shut down
  // the corresponding RenderViewHost if it is no longer needed.
  frame_tree_->ReleaseRenderViewHostRef(render_view_host_);

  ui::AXTreeIDRegistry::GetInstance()->RemoveAXTreeID(ax_tree_id_);
}

int RenderFrameHostImpl::GetRoutingID() {
  return routing_id_;
}

ui::AXTreeIDRegistry::AXTreeID RenderFrameHostImpl::GetAXTreeID() {
  return ax_tree_id_;
}

const base::UnguessableToken& RenderFrameHostImpl::GetOverlayRoutingToken() {
  if (!overlay_routing_token_) {
    overlay_routing_token_ = base::UnguessableToken::Create();
    g_token_frame_map.Get().emplace(*overlay_routing_token_, this);
  }

  return *overlay_routing_token_;
}

SiteInstanceImpl* RenderFrameHostImpl::GetSiteInstance() {
  return site_instance_.get();
}

RenderProcessHost* RenderFrameHostImpl::GetProcess() {
  return process_;
}

RenderFrameHostImpl* RenderFrameHostImpl::GetParent() {
  return parent_;
}

int RenderFrameHostImpl::GetFrameTreeNodeId() {
  return frame_tree_node_->frame_tree_node_id();
}

base::UnguessableToken RenderFrameHostImpl::GetDevToolsFrameToken() {
  return frame_tree_node_->devtools_frame_token();
}

const std::string& RenderFrameHostImpl::GetFrameName() {
  return frame_tree_node_->frame_name();
}

bool RenderFrameHostImpl::IsCrossProcessSubframe() {
  if (!parent_)
    return false;
  return GetSiteInstance() != parent_->GetSiteInstance();
}

const GURL& RenderFrameHostImpl::GetLastCommittedURL() {
  return last_committed_url_;
}

const url::Origin& RenderFrameHostImpl::GetLastCommittedOrigin() {
  return last_committed_origin_;
}

void RenderFrameHostImpl::GetCanonicalUrlForSharing(
    mojom::Frame::GetCanonicalUrlForSharingCallback callback) {
  DCHECK(frame_);
  frame_->GetCanonicalUrlForSharing(std::move(callback));
}

gfx::NativeView RenderFrameHostImpl::GetNativeView() {
  RenderWidgetHostView* view = render_view_host_->GetWidget()->GetView();
  if (!view)
    return nullptr;
  return view->GetNativeView();
}

void RenderFrameHostImpl::AddMessageToConsole(ConsoleMessageLevel level,
                                              const std::string& message) {
  Send(new FrameMsg_AddMessageToConsole(routing_id_, level, message));
}

void RenderFrameHostImpl::ExecuteJavaScript(
    const base::string16& javascript) {
  CHECK(CanExecuteJavaScript());
  Send(new FrameMsg_JavaScriptExecuteRequest(routing_id_,
                                             javascript,
                                             0, false));
}

void RenderFrameHostImpl::ExecuteJavaScript(
     const base::string16& javascript,
     const JavaScriptResultCallback& callback) {
  CHECK(CanExecuteJavaScript());
  int key = g_next_javascript_callback_id++;
  Send(new FrameMsg_JavaScriptExecuteRequest(routing_id_,
                                             javascript,
                                             key, true));
  javascript_callbacks_.insert(std::make_pair(key, callback));
}

void RenderFrameHostImpl::ExecuteJavaScriptForTests(
    const base::string16& javascript) {
  Send(new FrameMsg_JavaScriptExecuteRequestForTests(routing_id_,
                                                     javascript,
                                                     0, false, false));
}

void RenderFrameHostImpl::ExecuteJavaScriptForTests(
     const base::string16& javascript,
     const JavaScriptResultCallback& callback) {
  int key = g_next_javascript_callback_id++;
  Send(new FrameMsg_JavaScriptExecuteRequestForTests(routing_id_, javascript,
                                                     key, true, false));
  javascript_callbacks_.insert(std::make_pair(key, callback));
}


void RenderFrameHostImpl::ExecuteJavaScriptWithUserGestureForTests(
    const base::string16& javascript) {
  Send(new FrameMsg_JavaScriptExecuteRequestForTests(routing_id_,
                                                     javascript,
                                                     0, false, true));
}

void RenderFrameHostImpl::ExecuteJavaScriptInIsolatedWorld(
    const base::string16& javascript,
    const JavaScriptResultCallback& callback,
    int world_id) {
  if (world_id <= ISOLATED_WORLD_ID_GLOBAL ||
      world_id > ISOLATED_WORLD_ID_MAX) {
    // Return if the world_id is not valid.
    NOTREACHED();
    return;
  }

  int key = 0;
  bool request_reply = false;
  if (!callback.is_null()) {
    request_reply = true;
    key = g_next_javascript_callback_id++;
    javascript_callbacks_.insert(std::make_pair(key, callback));
  }

  Send(new FrameMsg_JavaScriptExecuteRequestInIsolatedWorld(
      routing_id_, javascript, key, request_reply, world_id));
}

void RenderFrameHostImpl::CopyImageAt(int x, int y) {
  gfx::PointF point_in_view =
      GetView()->TransformRootPointToViewCoordSpace(gfx::PointF(x, y));
  Send(new FrameMsg_CopyImageAt(routing_id_, point_in_view.x(),
                                point_in_view.y()));
}

void RenderFrameHostImpl::SaveImageAt(int x, int y) {
  gfx::PointF point_in_view =
      GetView()->TransformRootPointToViewCoordSpace(gfx::PointF(x, y));
  Send(new FrameMsg_SaveImageAt(routing_id_, point_in_view.x(),
                                point_in_view.y()));
}

RenderViewHost* RenderFrameHostImpl::GetRenderViewHost() {
  return render_view_host_;
}

service_manager::InterfaceProvider* RenderFrameHostImpl::GetRemoteInterfaces() {
  return remote_interfaces_.get();
}

blink::AssociatedInterfaceProvider*
RenderFrameHostImpl::GetRemoteAssociatedInterfaces() {
  if (!remote_associated_interfaces_) {
    mojom::AssociatedInterfaceProviderAssociatedPtr remote_interfaces;
    IPC::ChannelProxy* channel = GetProcess()->GetChannel();
    if (channel) {
      RenderProcessHostImpl* process =
          static_cast<RenderProcessHostImpl*>(GetProcess());
      process->GetRemoteRouteProvider()->GetRoute(
          GetRoutingID(), mojo::MakeRequest(&remote_interfaces));
    } else {
      // The channel may not be initialized in some tests environments. In this
      // case we set up a dummy interface provider.
      mojo::MakeRequestAssociatedWithDedicatedPipe(&remote_interfaces);
    }
    remote_associated_interfaces_.reset(new AssociatedInterfaceProviderImpl(
        std::move(remote_interfaces)));
  }
  return remote_associated_interfaces_.get();
}

blink::mojom::PageVisibilityState RenderFrameHostImpl::GetVisibilityState() {
  // Works around the crashes seen in https://crbug.com/501863, where the
  // active WebContents from a browser iterator may contain a render frame
  // detached from the frame tree. This tries to find a RenderWidgetHost
  // attached to an ancestor frame, and defaults to visibility hidden if
  // it fails.
  // TODO(yfriedman, peter): Ideally this would never be called on an
  // unattached frame and we could omit this check. See
  // https://crbug.com/615867.
  RenderFrameHostImpl* frame = this;
  while (frame) {
    if (frame->render_widget_host_)
      break;
    frame = frame->GetParent();
  }
  if (!frame)
    return blink::mojom::PageVisibilityState::kHidden;

  blink::mojom::PageVisibilityState visibility_state =
      GetRenderWidgetHost()->is_hidden()
          ? blink::mojom::PageVisibilityState::kHidden
          : blink::mojom::PageVisibilityState::kVisible;
  GetContentClient()->browser()->OverridePageVisibilityState(this,
                                                             &visibility_state);
  return visibility_state;
}

bool RenderFrameHostImpl::Send(IPC::Message* message) {
  DCHECK(IPC_MESSAGE_ID_CLASS(message->type()) != InputMsgStart);
  return GetProcess()->Send(message);
}

bool RenderFrameHostImpl::OnMessageReceived(const IPC::Message &msg) {
  // Only process messages if the RenderFrame is alive.
  if (!render_frame_created_)
    return false;

  // Crash reports trigerred by IPC messages for this frame should be associated
  // with its URL.
  // TODO(lukasza): Also call SetActiveURL for mojo messages dispatched to
  // either the FrameHost interface or to interfaces bound by this frame.
  ScopedActiveURL scoped_active_url(this);

  // This message map is for handling internal IPC messages which should not
  // be dispatched to other objects.
  bool handled = true;
  IPC_BEGIN_MESSAGE_MAP(RenderFrameHostImpl, msg)
    // This message is synthetic and doesn't come from RenderFrame, but from
    // RenderProcessHost.
    IPC_MESSAGE_HANDLER(FrameHostMsg_RenderProcessGone, OnRenderProcessGone)
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()

  // Internal IPCs should not be leaked outside of this object, so return
  // early.
  if (handled)
    return true;

  if (delegate_->OnMessageReceived(this, msg))
    return true;

  RenderFrameProxyHost* proxy =
      frame_tree_node_->render_manager()->GetProxyToParent();
  if (proxy && proxy->cross_process_frame_connector() &&
      proxy->cross_process_frame_connector()->OnMessageReceived(msg))
    return true;

  handled = true;
  IPC_BEGIN_MESSAGE_MAP(RenderFrameHostImpl, msg)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidAddMessageToConsole,
                        OnDidAddMessageToConsole)
    IPC_MESSAGE_HANDLER(FrameHostMsg_Detach, OnDetach)
    IPC_MESSAGE_HANDLER(FrameHostMsg_FrameFocused, OnFrameFocused)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidStartProvisionalLoad,
                        OnDidStartProvisionalLoad)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidFailProvisionalLoadWithError,
                        OnDidFailProvisionalLoadWithError)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidFailLoadWithError,
                        OnDidFailLoadWithError)
    IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateState, OnUpdateState)
    IPC_MESSAGE_HANDLER(FrameHostMsg_OpenURL, OnOpenURL)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DocumentOnLoadCompleted,
                        OnDocumentOnLoadCompleted)
    IPC_MESSAGE_HANDLER(FrameHostMsg_BeforeUnload_ACK, OnBeforeUnloadACK)
    IPC_MESSAGE_HANDLER(FrameHostMsg_SwapOut_ACK, OnSwapOutACK)
    IPC_MESSAGE_HANDLER(FrameHostMsg_ContextMenu, OnContextMenu)
    IPC_MESSAGE_HANDLER(FrameHostMsg_JavaScriptExecuteResponse,
                        OnJavaScriptExecuteResponse)
    IPC_MESSAGE_HANDLER(FrameHostMsg_VisualStateResponse,
                        OnVisualStateResponse)
    IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunJavaScriptDialog,
                                    OnRunJavaScriptDialog)
    IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunBeforeUnloadConfirm,
                                    OnRunBeforeUnloadConfirm)
    IPC_MESSAGE_HANDLER(FrameHostMsg_RunFileChooser, OnRunFileChooser)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidAccessInitialDocument,
                        OnDidAccessInitialDocument)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeOpener, OnDidChangeOpener)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidAddContentSecurityPolicies,
                        OnDidAddContentSecurityPolicies)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeFramePolicy,
                        OnDidChangeFramePolicy)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeFrameOwnerProperties,
                        OnDidChangeFrameOwnerProperties)
    IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateTitle, OnUpdateTitle)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidBlockFramebust, OnDidBlockFramebust)
    IPC_MESSAGE_HANDLER(FrameHostMsg_AbortNavigation, OnAbortNavigation)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DispatchLoad, OnDispatchLoad)
    IPC_MESSAGE_HANDLER(FrameHostMsg_ForwardResourceTimingToParent,
                        OnForwardResourceTimingToParent)
    IPC_MESSAGE_HANDLER(FrameHostMsg_TextSurroundingSelectionResponse,
                        OnTextSurroundingSelectionResponse)
    IPC_MESSAGE_HANDLER(AccessibilityHostMsg_Events, OnAccessibilityEvents)
    IPC_MESSAGE_HANDLER(AccessibilityHostMsg_LocationChanges,
                        OnAccessibilityLocationChanges)
    IPC_MESSAGE_HANDLER(AccessibilityHostMsg_FindInPageResult,
                        OnAccessibilityFindInPageResult)
    IPC_MESSAGE_HANDLER(AccessibilityHostMsg_ChildFrameHitTestResult,
                        OnAccessibilityChildFrameHitTestResult)
    IPC_MESSAGE_HANDLER(AccessibilityHostMsg_SnapshotResponse,
                        OnAccessibilitySnapshotResponse)
    IPC_MESSAGE_HANDLER(FrameHostMsg_EnterFullscreen, OnEnterFullscreen)
    IPC_MESSAGE_HANDLER(FrameHostMsg_ExitFullscreen, OnExitFullscreen)
    IPC_MESSAGE_HANDLER(FrameHostMsg_SuddenTerminationDisablerChanged,
                        OnSuddenTerminationDisablerChanged)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidStartLoading, OnDidStartLoading)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidStopLoading, OnDidStopLoading)
    IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeLoadProgress,
                        OnDidChangeLoadProgress)
    IPC_MESSAGE_HANDLER(FrameHostMsg_SerializeAsMHTMLResponse,
                        OnSerializeAsMHTMLResponse)
    IPC_MESSAGE_HANDLER(FrameHostMsg_SelectionChanged, OnSelectionChanged)
    IPC_MESSAGE_HANDLER(FrameHostMsg_FocusedNodeChanged, OnFocusedNodeChanged)
    IPC_MESSAGE_HANDLER(FrameHostMsg_SetHasReceivedUserGesture,
                        OnSetHasReceivedUserGesture)
    IPC_MESSAGE_HANDLER(FrameHostMsg_SetHasReceivedUserGestureBeforeNavigation,
                        OnSetHasReceivedUserGestureBeforeNavigation)
    IPC_MESSAGE_HANDLER(FrameHostMsg_ScrollRectToVisibleInParentFrame,
                        OnScrollRectToVisibleInParentFrame)
    IPC_MESSAGE_HANDLER(FrameHostMsg_FrameDidCallFocus, OnFrameDidCallFocus)
#if BUILDFLAG(USE_EXTERNAL_POPUP_MENU)
    IPC_MESSAGE_HANDLER(FrameHostMsg_ShowPopup, OnShowPopup)
    IPC_MESSAGE_HANDLER(FrameHostMsg_HidePopup, OnHidePopup)
#endif
    IPC_MESSAGE_HANDLER(FrameHostMsg_RequestOverlayRoutingToken,
                        OnRequestOverlayRoutingToken)
    IPC_MESSAGE_HANDLER(FrameHostMsg_ShowCreatedWindow, OnShowCreatedWindow)
  IPC_END_MESSAGE_MAP()

  // No further actions here, since we may have been deleted.
  return handled;
}

void RenderFrameHostImpl::OnAssociatedInterfaceRequest(
    const std::string& interface_name,
    mojo::ScopedInterfaceEndpointHandle handle) {
  ContentBrowserClient* browser_client = GetContentClient()->browser();
  if (associated_registry_->CanBindRequest(interface_name)) {
    associated_registry_->BindRequest(interface_name, std::move(handle));
  } else if (!browser_client->BindAssociatedInterfaceRequestFromFrame(
                 this, interface_name, &handle)) {
    delegate_->OnAssociatedInterfaceRequest(this, interface_name,
                                            std::move(handle));
  }
}

void RenderFrameHostImpl::AccessibilityPerformAction(
    const ui::AXActionData& action_data) {
  Send(new AccessibilityMsg_PerformAction(routing_id_, action_data));
}

bool RenderFrameHostImpl::AccessibilityViewHasFocus() const {
  RenderWidgetHostView* view = render_view_host_->GetWidget()->GetView();
  if (view)
    return view->HasFocus();
  return false;
}

gfx::Rect RenderFrameHostImpl::AccessibilityGetViewBounds() const {
  RenderWidgetHostView* view = render_view_host_->GetWidget()->GetView();
  if (view)
    return view->GetViewBounds();
  return gfx::Rect();
}

gfx::Point RenderFrameHostImpl::AccessibilityOriginInScreen(
    const gfx::Rect& bounds) const {
  RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
      render_view_host_->GetWidget()->GetView());
  if (view)
    return view->AccessibilityOriginInScreen(bounds);
  return gfx::Point();
}

float RenderFrameHostImpl::AccessibilityGetDeviceScaleFactor() const {
  RenderWidgetHostView* view = render_view_host_->GetWidget()->GetView();
  if (view)
    return GetScaleFactorForView(view);
  return 1.0f;
}

void RenderFrameHostImpl::AccessibilityReset() {
  accessibility_reset_token_ = g_next_accessibility_reset_token++;
  Send(new AccessibilityMsg_Reset(routing_id_, accessibility_reset_token_));
}

void RenderFrameHostImpl::AccessibilityFatalError() {
  browser_accessibility_manager_.reset(nullptr);
  if (accessibility_reset_token_)
    return;

  accessibility_reset_count_++;
  if (accessibility_reset_count_ >= kMaxAccessibilityResets) {
    Send(new AccessibilityMsg_FatalError(routing_id_));
  } else {
    accessibility_reset_token_ = g_next_accessibility_reset_token++;
    Send(new AccessibilityMsg_Reset(routing_id_, accessibility_reset_token_));
  }
}

gfx::AcceleratedWidget
    RenderFrameHostImpl::AccessibilityGetAcceleratedWidget() {
  // Only the main frame's current frame host is connected to the native
  // widget tree for accessibility, so return null if this is queried on
  // any other frame.
  if (frame_tree_node()->parent() || !IsCurrent())
    return gfx::kNullAcceleratedWidget;

  RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
      render_view_host_->GetWidget()->GetView());
  if (view)
    return view->AccessibilityGetAcceleratedWidget();
  return gfx::kNullAcceleratedWidget;
}

gfx::NativeViewAccessible
    RenderFrameHostImpl::AccessibilityGetNativeViewAccessible() {
  RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
      render_view_host_->GetWidget()->GetView());
  if (view)
    return view->AccessibilityGetNativeViewAccessible();
  return nullptr;
}

void RenderFrameHostImpl::RenderProcessGone(SiteInstanceImpl* site_instance) {
  DCHECK_EQ(site_instance_.get(), site_instance);

  // The renderer process is gone, so this frame can no longer be loading.
  if (GetNavigationHandle())
    GetNavigationHandle()->set_net_error_code(net::ERR_ABORTED);
  ResetLoadingState();

  // Any future UpdateState or UpdateTitle messages from this or a recreated
  // process should be ignored until the next commit.
  set_nav_entry_id(0);

  if (is_audible_)
    GetProcess()->OnMediaStreamRemoved();
}

void RenderFrameHostImpl::ReportContentSecurityPolicyViolation(
    const CSPViolationParams& violation_params) {
  Send(new FrameMsg_ReportContentSecurityPolicyViolation(routing_id_,
                                                         violation_params));
}

void RenderFrameHostImpl::SanitizeDataForUseInCspViolation(
    bool is_redirect,
    CSPDirective::Name directive,
    GURL* blocked_url,
    SourceLocation* source_location) const {
  DCHECK(blocked_url);
  DCHECK(source_location);
  GURL source_location_url(source_location->url);

  // The main goal of this is to avoid leaking information between potentially
  // separate renderers, in the event of one of them being compromised.
  // See https://crbug.com/633306.
  bool sanitize_blocked_url = true;
  bool sanitize_source_location = true;

  // There is no need to sanitize data when it is same-origin with the current
  // url of the renderer.
  if (url::Origin::Create(*blocked_url)
          .IsSameOriginWith(last_committed_origin_))
    sanitize_blocked_url = false;
  if (url::Origin::Create(source_location_url)
          .IsSameOriginWith(last_committed_origin_))
    sanitize_source_location = false;

  // When a renderer tries to do a form submission, it already knows the url of
  // the blocked url, except when it is redirected.
  if (!is_redirect && directive == CSPDirective::FormAction)
    sanitize_blocked_url = false;

  if (sanitize_blocked_url)
    *blocked_url = blocked_url->GetOrigin();
  if (sanitize_source_location) {
    *source_location =
        SourceLocation(source_location_url.GetOrigin().spec(), 0u, 0u);
  }
}

bool RenderFrameHostImpl::SchemeShouldBypassCSP(
    const base::StringPiece& scheme) {
  // Blink uses its SchemeRegistry to check if a scheme should be bypassed.
  // It can't be used on the browser process. It is used for two things:
  // 1) Bypassing the "chrome-extension" scheme when chrome is built with the
  //    extensions support.
  // 2) Bypassing arbitrary scheme for testing purpose only in blink and in V8.
  // TODO(arthursonzogni): url::GetBypassingCSPScheme() is used instead of the
  // blink::SchemeRegistry. It contains 1) but not 2).
  const auto& bypassing_schemes = url::GetCSPBypassingSchemes();
  return std::find(bypassing_schemes.begin(), bypassing_schemes.end(),
                   scheme) != bypassing_schemes.end();
}

mojom::FrameInputHandler* RenderFrameHostImpl::GetFrameInputHandler() {
  return frame_input_handler_.get();
}

bool RenderFrameHostImpl::CreateRenderFrame(int proxy_routing_id,
                                            int opener_routing_id,
                                            int parent_routing_id,
                                            int previous_sibling_routing_id) {
  TRACE_EVENT0("navigation", "RenderFrameHostImpl::CreateRenderFrame");
  DCHECK(!IsRenderFrameLive()) << "Creating frame twice";

  // The process may (if we're sharing a process with another host that already
  // initialized it) or may not (we have our own process or the old process
  // crashed) have been initialized. Calling Init multiple times will be
  // ignored, so this is safe.
  if (!GetProcess()->Init())
    return false;

  DCHECK(GetProcess()->HasConnection());

  service_manager::mojom::InterfaceProviderPtr interface_provider;
  BindInterfaceProviderRequest(mojo::MakeRequest(&interface_provider));

  mojom::CreateFrameParamsPtr params = mojom::CreateFrameParams::New();
  params->interface_provider = interface_provider.PassInterface();
  params->routing_id = routing_id_;
  params->proxy_routing_id = proxy_routing_id;
  params->opener_routing_id = opener_routing_id;
  params->parent_routing_id = parent_routing_id;
  params->previous_sibling_routing_id = previous_sibling_routing_id;
  params->replication_state = frame_tree_node()->current_replication_state();
  params->devtools_frame_token = frame_tree_node()->devtools_frame_token();

  // Normally, the replication state contains effective frame policy, excluding
  // sandbox flags and feature policy attributes that were updated but have not
  // taken effect. However, a new RenderFrame should use the pending frame
  // policy, since it is being created as part of the navigation that will
  // commit it. (I.e., the RenderFrame needs to know the policy to use when
  // initializing the new document once it commits).
  params->replication_state.frame_policy =
      frame_tree_node()->pending_frame_policy();

  params->frame_owner_properties =
      FrameOwnerProperties(frame_tree_node()->frame_owner_properties());

  params->has_committed_real_load =
      frame_tree_node()->has_committed_real_load();

  params->widget_params = mojom::CreateFrameWidgetParams::New();
  if (render_widget_host_) {
    params->widget_params->routing_id = render_widget_host_->GetRoutingID();
    params->widget_params->hidden = render_widget_host_->is_hidden();
  } else {
    // MSG_ROUTING_NONE will prevent a new RenderWidget from being created in
    // the renderer process.
    params->widget_params->routing_id = MSG_ROUTING_NONE;
    params->widget_params->hidden = true;
  }

  GetProcess()->GetRendererInterface()->CreateFrame(std::move(params));

  // The RenderWidgetHost takes ownership of its view. It is tied to the
  // lifetime of the current RenderProcessHost for this RenderFrameHost.
  // TODO(avi): This will need to change to initialize a
  // RenderWidgetHostViewAura for the main frame once RenderViewHostImpl has-a
  // RenderWidgetHostImpl. https://crbug.com/545684
  if (parent_routing_id != MSG_ROUTING_NONE && render_widget_host_) {
    RenderWidgetHostView* rwhv =
        RenderWidgetHostViewChildFrame::Create(render_widget_host_);
    rwhv->Hide();
  }

  if (proxy_routing_id != MSG_ROUTING_NONE) {
    RenderFrameProxyHost* proxy = RenderFrameProxyHost::FromID(
        GetProcess()->GetID(), proxy_routing_id);
    // We have also created a RenderFrameProxy in CreateFrame above, so
    // remember that.
    proxy->set_render_frame_proxy_created(true);
  }

  // The renderer now has a RenderFrame for this RenderFrameHost.  Note that
  // this path is only used for out-of-process iframes.  Main frame RenderFrames
  // are created with their RenderView, and same-site iframes are created at the
  // time of OnCreateChildFrame.
  SetRenderFrameCreated(true);

  return true;
}

void RenderFrameHostImpl::SetRenderFrameCreated(bool created) {
  // We should not create new RenderFrames while our delegate is being destroyed
  // (e.g., via a WebContentsObserver during WebContents shutdown).  This seems
  // to have caused crashes in https://crbug.com/717650.
  if (created && delegate_)
    CHECK(!delegate_->IsBeingDestroyed());

  bool was_created = render_frame_created_;
  render_frame_created_ = created;

  // If the current status is different than the new status, the delegate
  // needs to be notified.
  if (delegate_ && (created != was_created)) {
    if (created) {
      SetUpMojoIfNeeded();
      delegate_->RenderFrameCreated(this);
    } else {
      delegate_->RenderFrameDeleted(this);
    }
  }

  if (created && render_widget_host_) {
    mojom::WidgetPtr widget;
    GetRemoteInterfaces()->GetInterface(&widget);
    render_widget_host_->SetWidget(std::move(widget));

    if (frame_input_handler_) {
      mojom::WidgetInputHandlerAssociatedPtr widget_handler;
      mojom::WidgetInputHandlerHostPtr host;
      mojom::WidgetInputHandlerHostRequest host_request =
          mojo::MakeRequest(&host);
      frame_input_handler_->GetWidgetInputHandler(
          mojo::MakeRequest(&widget_handler), std::move(host));
      render_widget_host_->SetWidgetInputHandler(std::move(widget_handler),
                                                 std::move(host_request));
    }
    render_widget_host_->input_router()->SetFrameTreeNodeId(
        frame_tree_node_->frame_tree_node_id());
    viz::mojom::InputTargetClientPtr input_target_client;
    remote_interfaces_->GetInterface(&input_target_client);
    input_target_client_ = input_target_client.get();
    render_widget_host_->SetInputTargetClient(std::move(input_target_client));
    render_widget_host_->InitForFrame();
  }

  if (enabled_bindings_ && created) {
    if (!frame_bindings_control_)
      GetRemoteAssociatedInterfaces()->GetInterface(&frame_bindings_control_);
    frame_bindings_control_->AllowBindings(enabled_bindings_);
  }
}

void RenderFrameHostImpl::Init() {
  ResumeBlockedRequestsForFrame();
  if (!waiting_for_init_)
    return;

  waiting_for_init_ = false;
  if (pending_navigate_) {
    frame_tree_node()->navigator()->OnBeginNavigation(
        frame_tree_node(), pending_navigate_->common_params,
        std::move(pending_navigate_->begin_params),
        std::move(pending_navigate_->blob_url_loader_factory));
    pending_navigate_.reset();
  }
}

void RenderFrameHostImpl::OnAudibleStateChanged(bool is_audible) {
  if (is_audible_ == is_audible)
    return;
  if (is_audible)
    GetProcess()->OnMediaStreamAdded();
  else
    GetProcess()->OnMediaStreamRemoved();
  is_audible_ = is_audible;

  GetFrameResourceCoordinator()->SetAudibility(is_audible_);
}

void RenderFrameHostImpl::OnDidAddMessageToConsole(
    int32_t level,
    const base::string16& message,
    int32_t line_no,
    const base::string16& source_id) {
  if (level < logging::LOG_VERBOSE || level > logging::LOG_FATAL) {
    bad_message::ReceivedBadMessage(
        GetProcess(), bad_message::RFH_DID_ADD_CONSOLE_MESSAGE_BAD_SEVERITY);
    return;
  }

  if (delegate_->DidAddMessageToConsole(level, message, line_no, source_id))
    return;

  // Pass through log level only on WebUI pages to limit console spew.
  const bool is_web_ui =
      HasWebUIScheme(delegate_->GetMainFrameLastCommittedURL());
  const int32_t resolved_level = is_web_ui ? level : ::logging::LOG_INFO;

  // LogMessages can be persisted so this shouldn't be logged in incognito mode.
  // This rule is not applied to WebUI pages, because source code of WebUI is a
  // part of Chrome source code, and we want to treat messages from WebUI the
  // same way as we treat log messages from native code.
  if (::logging::GetMinLogLevel() <= resolved_level &&
      (is_web_ui ||
       !GetSiteInstance()->GetBrowserContext()->IsOffTheRecord())) {
    logging::LogMessage("CONSOLE", line_no, resolved_level).stream()
        << "\"" << message << "\", source: " << source_id << " (" << line_no
        << ")";
  }
}

void RenderFrameHostImpl::OnCreateChildFrame(
    int new_routing_id,
    service_manager::mojom::InterfaceProviderRequest
        new_interface_provider_provider_request,
    blink::WebTreeScopeType scope,
    const std::string& frame_name,
    const std::string& frame_unique_name,
    bool is_created_by_script,
    const base::UnguessableToken& devtools_frame_token,
    const blink::FramePolicy& frame_policy,
    const FrameOwnerProperties& frame_owner_properties) {
  // TODO(lukasza): Call ReceivedBadMessage when |frame_unique_name| is empty.
  DCHECK(!frame_unique_name.empty());
  DCHECK(new_interface_provider_provider_request.is_pending());

  // The RenderFrame corresponding to this host sent an IPC message to create a
  // child, but by the time we get here, it's possible for the host to have been
  // swapped out, or for its process to have disconnected (maybe due to browser
  // shutdown). Ignore such messages.
  if (!is_active() || !IsCurrent() || !render_frame_created_)
    return;

  // |new_routing_id|, |new_interface_provider_provider_request|, and
  // |devtools_frame_token| were generated on the browser's IO thread and not
  // taken from the renderer process.
  frame_tree_->AddFrame(frame_tree_node_, GetProcess()->GetID(), new_routing_id,
                        std::move(new_interface_provider_provider_request),
                        scope, frame_name, frame_unique_name,
                        is_created_by_script, devtools_frame_token,
                        frame_policy, frame_owner_properties, was_discarded_);
}

void RenderFrameHostImpl::DidNavigate(
    const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
    bool is_same_document_navigation) {
  // Keep track of the last committed URL and origin in the RenderFrameHost
  // itself.  These allow GetLastCommittedURL and GetLastCommittedOrigin to
  // stay correct even if the render_frame_host later becomes pending deletion.
  // The URL is set regardless of whether it's for a net error or not.
  frame_tree_node_->SetCurrentURL(params.url);
  SetLastCommittedOrigin(params.origin);

  // Separately, update the frame's last successful URL except for net error
  // pages, since those do not end up in the correct process after transfers
  // (see https://crbug.com/560511).  Instead, the next cross-process navigation
  // or transfer should decide whether to swap as if the net error had not
  // occurred.
  // TODO(creis): Remove this block and always set the URL once transfers handle
  // network errors or PlzNavigate is enabled.  See https://crbug.com/588314.
  if (!params.url_is_unreachable)
    last_successful_url_ = params.url;

  // After setting the last committed origin, reset the feature policy and
  // sandbox flags in the RenderFrameHost to a blank policy based on the parent
  // frame.
  if (!is_same_document_navigation) {
    ResetFeaturePolicy();
    active_sandbox_flags_ = frame_tree_node()->active_sandbox_flags();
  }
}

void RenderFrameHostImpl::SetLastCommittedOrigin(const url::Origin& origin) {
  last_committed_origin_ = origin;
  CSPContext::SetSelf(origin);
}

void RenderFrameHostImpl::SetLastCommittedOriginForTesting(
    const url::Origin& origin) {
  SetLastCommittedOrigin(origin);
}

void RenderFrameHostImpl::SetLastCommittedUrl(const GURL& url) {
  last_committed_url_ = url;
}

void RenderFrameHostImpl::OnDetach() {
  frame_tree_->RemoveFrame(frame_tree_node_);
}

void RenderFrameHostImpl::OnFrameFocused() {
  delegate_->SetFocusedFrame(frame_tree_node_, GetSiteInstance());
}

void RenderFrameHostImpl::OnOpenURL(const FrameHostMsg_OpenURL_Params& params) {
  GURL validated_url(params.url);
  GetProcess()->FilterURL(false, &validated_url);
  if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadRequestBody(
          GetSiteInstance(), params.resource_request_body)) {
    bad_message::ReceivedBadMessage(GetProcess(),
                                    bad_message::RFH_ILLEGAL_UPLOAD_PARAMS);
    return;
  }

  if (params.is_history_navigation_in_new_child) {
    // Try to find a FrameNavigationEntry that matches this frame instead, based
    // on the frame's unique name.  If this can't be found, fall back to the
    // default params using RequestOpenURL below.
    if (frame_tree_node_->navigator()->StartHistoryNavigationInNewSubframe(
            this, validated_url)) {
      return;
    }
  }

  TRACE_EVENT1("navigation", "RenderFrameHostImpl::OpenURL", "url",
               validated_url.possibly_invalid_spec());

  frame_tree_node_->navigator()->RequestOpenURL(
      this, validated_url, params.uses_post, params.resource_request_body,
      params.extra_headers, params.referrer, params.disposition,
      params.should_replace_current_entry, params.user_gesture,
      params.triggering_event_info);
}

void RenderFrameHostImpl::CancelInitialHistoryLoad() {
  // A Javascript navigation interrupted the initial history load.  Check if an
  // initial subframe cross-process navigation needs to be canceled as a result.
  // TODO(creis, clamy): Cancel any cross-process navigation.
  NOTIMPLEMENTED();
}

void RenderFrameHostImpl::OnDocumentOnLoadCompleted(
    FrameMsg_UILoadMetricsReportType::Value report_type,
    base::TimeTicks ui_timestamp) {
  if (report_type == FrameMsg_UILoadMetricsReportType::REPORT_LINK) {
    UMA_HISTOGRAM_CUSTOM_TIMES("Navigation.UI_OnLoadComplete.Link",
                               base::TimeTicks::Now() - ui_timestamp,
                               base::TimeDelta::FromMilliseconds(10),
                               base::TimeDelta::FromMinutes(10), 100);
  } else if (report_type == FrameMsg_UILoadMetricsReportType::REPORT_INTENT) {
    UMA_HISTOGRAM_CUSTOM_TIMES("Navigation.UI_OnLoadComplete.Intent",
                               base::TimeTicks::Now() - ui_timestamp,
                               base::TimeDelta::FromMilliseconds(10),
                               base::TimeDelta::FromMinutes(10), 100);
  }
  // This message is only sent for top-level frames. TODO(avi): when frame tree
  // mirroring works correctly, add a check here to enforce it.
  delegate_->DocumentOnLoadCompleted(this);
}

void RenderFrameHostImpl::OnDidStartProvisionalLoad(
    const GURL& url,
    const std::vector<GURL>& redirect_chain,
    const base::TimeTicks& navigation_start) {
  // TODO(clamy): Check if other navigation methods (OpenURL,
  // DidFailProvisionalLoad, ...) should also be ignored if the RFH is no longer
  // active.
  if (!is_active())
    return;

  TRACE_EVENT2("navigation", "RenderFrameHostImpl::OnDidStartProvisionalLoad",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(), "url",
               url.possibly_invalid_spec());

  frame_tree_node_->navigator()->DidStartProvisionalLoad(
      this, url, redirect_chain, navigation_start);
}

void RenderFrameHostImpl::OnDidFailProvisionalLoadWithError(
    const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
  TRACE_EVENT2("navigation",
               "RenderFrameHostImpl::OnDidFailProvisionalLoadWithError",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(),
               "error", params.error_code);
  // TODO(clamy): Kill the renderer with RFH_FAIL_PROVISIONAL_LOAD_NO_HANDLE and
  // return early if navigation_handle_ is null, once we prevent that case from
  // happening in practice. See https://crbug.com/605289.

  // Update the error code in the NavigationHandle of the navigation.
  if (GetNavigationHandle()) {
    GetNavigationHandle()->set_net_error_code(
        static_cast<net::Error>(params.error_code));
  }

  frame_tree_node_->navigator()->DidFailProvisionalLoadWithError(this, params);
}

void RenderFrameHostImpl::OnDidFailLoadWithError(
    const GURL& url,
    int error_code,
    const base::string16& error_description) {
  TRACE_EVENT2("navigation",
               "RenderFrameHostImpl::OnDidFailProvisionalLoadWithError",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(),
               "error", error_code);

  GURL validated_url(url);
  GetProcess()->FilterURL(false, &validated_url);

  frame_tree_node_->navigator()->DidFailLoadWithError(
      this, validated_url, error_code, error_description);
}

// Called when the renderer navigates.  For every frame loaded, we'll get this
// notification containing parameters identifying the navigation.
void RenderFrameHostImpl::DidCommitProvisionalLoad(
    std::unique_ptr<FrameHostMsg_DidCommitProvisionalLoad_Params>
        validated_params,
    service_manager::mojom::InterfaceProviderRequest
        interface_provider_request) {
  // DidCommitProvisionalLoad IPC should be associated with the URL being
  // committed (not with the *last* committed URL that most other IPCs are
  // associated with).
  ScopedActiveURL scoped_active_url(
      validated_params->url,
      frame_tree_node()->frame_tree()->root()->current_origin());

  ScopedCommitStateResetter commit_state_resetter(this);
  RenderProcessHost* process = GetProcess();

  TRACE_EVENT2("navigation", "RenderFrameHostImpl::DidCommitProvisionalLoad",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(), "url",
               validated_params->url.possibly_invalid_spec());

  // Notify the resource scheduler of the navigation committing.
  NotifyResourceSchedulerOfNavigation(process->GetID(), *validated_params);

  // If we're waiting for a cross-site beforeunload ack from this renderer and
  // we receive a Navigate message from the main frame, then the renderer was
  // navigating already and sent it before hearing the FrameMsg_Stop message.
  // Treat this as an implicit beforeunload ack to allow the pending navigation
  // to continue.
  if (is_waiting_for_beforeunload_ack_ && unload_ack_is_for_navigation_ &&
      !GetParent()) {
    base::TimeTicks approx_renderer_start_time = send_before_unload_start_time_;
    OnBeforeUnloadACK(true, approx_renderer_start_time, base::TimeTicks::Now());
  }

  // If we're waiting for an unload ack from this frame and we receive a commit
  // message, then the frame was navigating before it received the unload
  // request.  It will either respond to the unload request soon or our timer
  // will expire.  Either way, we should ignore this message, because we have
  // already committed to destroying this RenderFrameHost.  Note that we
  // intentionally do not ignore commits that happen while the current tab is
  // being closed - see https://crbug.com/805705.
  if (is_waiting_for_swapout_ack_)
    return;

  // Retroactive sanity check:
  // - If this is the first real load committing in this frame, then by this
  //   time the RenderFrameHost's InterfaceProvider implementation should have
  //   already been bound to a message pipe whose client end is used to service
  //   interface requests from the initial empty document.
  // - Otherwise, the InterfaceProvider implementation should at this point be
  //   bound to an interface connection servicing interface requests coming from
  //   the document of the previously committed navigation.
  DCHECK(document_scoped_interface_provider_binding_.is_bound());

  if (interface_provider_request.is_pending()) {
    // As a general rule, expect the RenderFrame to have supplied the
    // request end of a new InterfaceProvider connection that will be used by
    // the new document to issue interface requests to access RenderFrameHost
    // services.
    auto interface_provider_request_of_previous_document =
        document_scoped_interface_provider_binding_.Unbind();
    dropped_interface_request_logger_ =
        std::make_unique<DroppedInterfaceRequestLogger>(
            std::move(interface_provider_request_of_previous_document));
    BindInterfaceProviderRequest(std::move(interface_provider_request));
  } else {
    // If there had already been a real load committed in the frame, and this is
    // not a same-document navigation, then both the active document as well as
    // the global object was replaced in this browsing context. The RenderFrame
    // should have rebound its InterfaceProvider to a new pipe, but failed to do
    // so. Kill the renderer, and close the old binding to ensure that any
    // pending interface requests originating from the previous document, hence
    // possibly from a different security origin, will no longer dispatched.
    if (frame_tree_node_->has_committed_real_load()) {
      document_scoped_interface_provider_binding_.Close();
      bad_message::ReceivedBadMessage(
          process, bad_message::RFH_INTERFACE_PROVIDER_MISSING);
      return;
    }

    // Otherwise, it is the first real load commited, for which the RenderFrame
    // is allowed to, and will re-use the existing InterfaceProvider connection
    // if the new document is same-origin with the initial empty document, and
    // therefore the global object is not replaced.
  }

  if (!DidCommitNavigationInternal(validated_params.get(),
                                   false /* is_same_document_navigation */))
    return;

  // Since we didn't early return, it's safe to keep the commit state.
  commit_state_resetter.disable();

  // For a top-level frame, there are potential security concerns associated
  // with displaying graphics from a previously loaded page after the URL in
  // the omnibar has been changed. It is unappealing to clear the page
  // immediately, but if the renderer is taking a long time to issue any
  // compositor output (possibly because of script deliberately creating this
  // situation) then we clear it after a while anyway.
  // See https://crbug.com/497588.
  if (frame_tree_node_->IsMainFrame() && GetView()) {
    RenderWidgetHostImpl::From(GetView()->GetRenderWidgetHost())
        ->DidNavigate(validated_params->content_source_id);
  }
}

void RenderFrameHostImpl::DidCommitSameDocumentNavigation(
    std::unique_ptr<FrameHostMsg_DidCommitProvisionalLoad_Params>
        validated_params) {
  ScopedActiveURL scoped_active_url(
      validated_params->url,
      frame_tree_node()->frame_tree()->root()->current_origin());
  ScopedCommitStateResetter commit_state_resetter(this);

  // If we're waiting for an unload ack from this frame and we receive a commit
  // message, then the frame was navigating before it received the unload
  // request.  It will either respond to the unload request soon or our timer
  // will expire.  Either way, we should ignore this message, because we have
  // already committed to destroying this RenderFrameHost.  Note that we
  // intentionally do not ignore commits that happen while the current tab is
  // being closed - see https://crbug.com/805705.
  // TODO(ahemery): Investigate to see if this can be removed when the
  // NavigationClient interface is implemented.
  if (is_waiting_for_swapout_ack_)
    return;

  TRACE_EVENT2("navigation",
               "RenderFrameHostImpl::DidCommitSameDocumentNavigation",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(), "url",
               validated_params->url.possibly_invalid_spec());

  if (!DidCommitNavigationInternal(validated_params.get(),
                                   true /* is_same_document_navigation*/))
    return;

  // Since we didn't early return, it's safe to keep the commit state.
  commit_state_resetter.disable();
}

void RenderFrameHostImpl::OnUpdateState(const PageState& state) {
  // TODO(creis): Verify the state's ISN matches the last committed FNE.

  // Without this check, the renderer can trick the browser into using
  // filenames it can't access in a future session restore.
  if (!CanAccessFilesOfPageState(state)) {
    bad_message::ReceivedBadMessage(
        GetProcess(), bad_message::RFH_CAN_ACCESS_FILES_OF_PAGE_STATE);
    return;
  }

  delegate_->UpdateStateForFrame(this, state);
}

RenderWidgetHostImpl* RenderFrameHostImpl::GetRenderWidgetHost() {
  RenderFrameHostImpl* frame = this;
  while (frame) {
    if (frame->render_widget_host_)
      return frame->render_widget_host_;
    frame = frame->GetParent();
  }

  NOTREACHED();
  return nullptr;
}

RenderWidgetHostView* RenderFrameHostImpl::GetView() {
  return GetRenderWidgetHost()->GetView();
}

GlobalFrameRoutingId RenderFrameHostImpl::GetGlobalFrameRoutingId() {
  return GlobalFrameRoutingId(GetProcess()->GetID(), GetRoutingID());
}

NavigationHandleImpl* RenderFrameHostImpl::GetNavigationHandle() {
  return navigation_request() ? navigation_request()->navigation_handle()
                              : nullptr;
}

void RenderFrameHostImpl::ResetNavigationRequests() {
  navigation_request_.reset();
  same_document_navigation_request_.reset();
}

void RenderFrameHostImpl::SetNavigationRequest(
    std::unique_ptr<NavigationRequest> navigation_request) {
  DCHECK(navigation_request);
  if (FrameMsg_Navigate_Type::IsSameDocument(
          navigation_request->common_params().navigation_type)) {
    same_document_navigation_request_ = std::move(navigation_request);
    return;
  }
  navigation_request_ = std::move(navigation_request);
}

void RenderFrameHostImpl::SwapOut(
    RenderFrameProxyHost* proxy,
    bool is_loading) {
  // The end of this event is in OnSwapOutACK when the RenderFrame has completed
  // the operation and sends back an IPC message.
  // The trace event may not end properly if the ACK times out.  We expect this
  // to be fixed when RenderViewHostImpl::OnSwapOut moves to RenderFrameHost.
  TRACE_EVENT_ASYNC_BEGIN1("navigation", "RenderFrameHostImpl::SwapOut", this,
                           "frame_tree_node",
                           frame_tree_node_->frame_tree_node_id());

  // If this RenderFrameHost is already pending deletion, it must have already
  // gone through this, therefore just return.
  if (!is_active()) {
    NOTREACHED() << "RFH should be in default state when calling SwapOut.";
    return;
  }

  if (swapout_event_monitor_timeout_) {
    swapout_event_monitor_timeout_->Start(base::TimeDelta::FromMilliseconds(
        RenderViewHostImpl::kUnloadTimeoutMS));
  }

  // There should always be a proxy to replace the old RenderFrameHost.  If
  // there are no remaining active views in the process, the proxy will be
  // short-lived and will be deleted when the SwapOut ACK is received.
  CHECK(proxy);

  if (IsRenderFrameLive()) {
    FrameReplicationState replication_state =
        proxy->frame_tree_node()->current_replication_state();
    Send(new FrameMsg_SwapOut(routing_id_, proxy->GetRoutingID(), is_loading,
                              replication_state));
  }

  if (web_ui())
    web_ui()->RenderFrameHostSwappingOut();

  // TODO(nasko): If the frame is not live, the RFH should just be deleted by
  // simulating the receipt of swap out ack.
  is_waiting_for_swapout_ack_ = true;
  if (frame_tree_node_->IsMainFrame())
    render_view_host_->SetIsActive(false);
}

void RenderFrameHostImpl::OnBeforeUnloadACK(
    bool proceed,
    const base::TimeTicks& renderer_before_unload_start_time,
    const base::TimeTicks& renderer_before_unload_end_time) {
  TRACE_EVENT_ASYNC_END1("navigation", "RenderFrameHostImpl BeforeUnload", this,
                         "FrameTreeNode id",
                         frame_tree_node_->frame_tree_node_id());
  // If this renderer navigated while the beforeunload request was in flight, we
  // may have cleared this state in DidCommitProvisionalLoad, in which case we
  // can ignore this message.
  // However renderer might also be swapped out but we still want to proceed
  // with navigation, otherwise it would block future navigations. This can
  // happen when pending cross-site navigation is canceled by a second one just
  // before DidCommitProvisionalLoad while current RVH is waiting for commit
  // but second navigation is started from the beginning.
  if (!is_waiting_for_beforeunload_ack_) {
    return;
  }
  DCHECK(!send_before_unload_start_time_.is_null());

  // Sets a default value for before_unload_end_time so that the browser
  // survives a hacked renderer.
  base::TimeTicks before_unload_end_time = renderer_before_unload_end_time;
  if (!renderer_before_unload_start_time.is_null() &&
      !renderer_before_unload_end_time.is_null()) {
    base::TimeTicks receive_before_unload_ack_time = base::TimeTicks::Now();

    if (!base::TimeTicks::IsConsistentAcrossProcesses()) {
      // TimeTicks is not consistent across processes and we are passing
      // TimeTicks across process boundaries so we need to compensate for any
      // skew between the processes. Here we are converting the renderer's
      // notion of before_unload_end_time to TimeTicks in the browser process.
      // See comments in inter_process_time_ticks_converter.h for more.
      InterProcessTimeTicksConverter converter(
          LocalTimeTicks::FromTimeTicks(send_before_unload_start_time_),
          LocalTimeTicks::FromTimeTicks(receive_before_unload_ack_time),
          RemoteTimeTicks::FromTimeTicks(renderer_before_unload_start_time),
          RemoteTimeTicks::FromTimeTicks(renderer_before_unload_end_time));
      LocalTimeTicks browser_before_unload_end_time =
          converter.ToLocalTimeTicks(
              RemoteTimeTicks::FromTimeTicks(renderer_before_unload_end_time));
      before_unload_end_time = browser_before_unload_end_time.ToTimeTicks();
    }

    base::TimeDelta on_before_unload_overhead_time =
        (receive_before_unload_ack_time - send_before_unload_start_time_) -
        (renderer_before_unload_end_time - renderer_before_unload_start_time);
    UMA_HISTOGRAM_TIMES("Navigation.OnBeforeUnloadOverheadTime",
                        on_before_unload_overhead_time);

    frame_tree_node_->navigator()->LogBeforeUnloadTime(
        renderer_before_unload_start_time, renderer_before_unload_end_time);
  }
  // Resets beforeunload waiting state.
  is_waiting_for_beforeunload_ack_ = false;
  if (beforeunload_timeout_)
    beforeunload_timeout_->Stop();
  send_before_unload_start_time_ = base::TimeTicks();

  // If the ACK is for a navigation, send it to the Navigator to have the
  // current navigation stop/proceed. Otherwise, send it to the
  // RenderFrameHostManager which handles closing.
  if (unload_ack_is_for_navigation_) {
    frame_tree_node_->navigator()->OnBeforeUnloadACK(frame_tree_node_, proceed,
                                                     before_unload_end_time);
  } else {
    frame_tree_node_->render_manager()->OnBeforeUnloadACK(
        proceed, before_unload_end_time);
  }

  // If canceled, notify the delegate to cancel its pending navigation entry.
  // This is usually redundant with the dialog closure code in WebContentsImpl's
  // OnDialogClosed, but there may be some cases that Blink returns !proceed
  // without showing the dialog. We also update the address bar here to be safe.
  if (!proceed)
    delegate_->DidCancelLoading();
}

bool RenderFrameHostImpl::IsWaitingForUnloadACK() const {
  return render_view_host_->is_waiting_for_close_ack_ ||
         is_waiting_for_swapout_ack_;
}

void RenderFrameHostImpl::OnSwapOutACK() {
  OnSwappedOut();
}

void RenderFrameHostImpl::OnRenderProcessGone(int status, int exit_code) {
  if (frame_tree_node_->IsMainFrame()) {
    // Keep the termination status so we can get at it later when we
    // need to know why it died.
    render_view_host_->render_view_termination_status_ =
        static_cast<base::TerminationStatus>(status);
  }

  // Reset frame tree state associated with this process.  This must happen
  // before RenderViewTerminated because observers expect the subframes of any
  // affected frames to be cleared first.
  frame_tree_node_->ResetForNewProcess();

  // Reset state for the current RenderFrameHost once the FrameTreeNode has been
  // reset.
  SetRenderFrameCreated(false);
  InvalidateMojoConnection();
  document_scoped_interface_provider_binding_.Close();
  SetLastCommittedUrl(GURL());

  // Execute any pending AX tree snapshot callbacks with an empty response,
  // since we're never going to get a response from this renderer.
  for (auto& iter : ax_tree_snapshot_callbacks_)
    std::move(iter.second).Run(ui::AXTreeUpdate());

#if defined(OS_ANDROID)
  // Execute any pending Samsung smart clip callbacks.
  for (base::IDMap<std::unique_ptr<ExtractSmartClipDataCallback>>::iterator
           iter(&smart_clip_callbacks_);
       !iter.IsAtEnd(); iter.Advance()) {
    std::move(*iter.GetCurrentValue()).Run(base::string16(), base::string16());
  }
  smart_clip_callbacks_.Clear();
#endif  // defined(OS_ANDROID)

  ax_tree_snapshot_callbacks_.clear();
  javascript_callbacks_.clear();
  visual_state_callbacks_.clear();

  // Ensure that future remote interface requests are associated with the new
  // process's channel.
  remote_associated_interfaces_.reset();

  // Any termination disablers in content loaded by the new process will
  // be sent again.
  sudden_termination_disabler_types_enabled_ = 0;

  if (!is_active()) {
    // If the process has died, we don't need to wait for the swap out ack from
    // this RenderFrame if it is pending deletion.  Complete the swap out to
    // destroy it.
    OnSwappedOut();
  } else {
    // If this was the current pending or speculative RFH dying, cancel and
    // destroy it.
    frame_tree_node_->render_manager()->CancelPendingIfNecessary(this);
  }

  // Note: don't add any more code at this point in the function because
  // |this| may be deleted. Any additional cleanup should happen before
  // the last block of code here.
}

void RenderFrameHostImpl::OnSwappedOut() {
  // Ignore spurious swap out ack.
  if (!is_waiting_for_swapout_ack_)
    return;

  TRACE_EVENT_ASYNC_END0("navigation", "RenderFrameHostImpl::SwapOut", this);
  if (swapout_event_monitor_timeout_)
    swapout_event_monitor_timeout_->Stop();

  ClearAllWebUI();

  // If this is a main frame RFH that's about to be deleted, update its RVH's
  // swapped-out state here. https://crbug.com/505887.  This should only be
  // done if the RVH hasn't been already reused and marked as active by another
  // navigation.  See https://crbug.com/823567.
  if (frame_tree_node_->IsMainFrame() && !render_view_host_->is_active())
    render_view_host_->set_is_swapped_out(true);

  bool deleted =
      frame_tree_node_->render_manager()->DeleteFromPendingList(this);
  CHECK(deleted);
}

void RenderFrameHostImpl::DisableSwapOutTimerForTesting() {
  swapout_event_monitor_timeout_.reset();
}

void RenderFrameHostImpl::OnContextMenu(const ContextMenuParams& params) {
  if (!is_active())
    return;

  // Validate the URLs in |params|.  If the renderer can't request the URLs
  // directly, don't show them in the context menu.
  ContextMenuParams validated_params(params);
  RenderProcessHost* process = GetProcess();

  // We don't validate |unfiltered_link_url| so that this field can be used
  // when users want to copy the original link URL.
  process->FilterURL(true, &validated_params.link_url);
  process->FilterURL(true, &validated_params.src_url);
  process->FilterURL(false, &validated_params.page_url);
  process->FilterURL(true, &validated_params.frame_url);

  // It is necessary to transform the coordinates to account for nested
  // RenderWidgetHosts, such as with out-of-process iframes.
  gfx::Point original_point(validated_params.x, validated_params.y);
  gfx::Point transformed_point =
      static_cast<RenderWidgetHostViewBase*>(GetView())
          ->TransformPointToRootCoordSpace(original_point);
  validated_params.x = transformed_point.x();
  validated_params.y = transformed_point.y();

  if (validated_params.selection_start_offset < 0) {
    bad_message::ReceivedBadMessage(
        GetProcess(), bad_message::RFH_NEGATIVE_SELECTION_START_OFFSET);
  }

  delegate_->ShowContextMenu(this, validated_params);
}

void RenderFrameHostImpl::OnJavaScriptExecuteResponse(
    int id, const base::ListValue& result) {
  const base::Value* result_value;
  if (!result.Get(0, &result_value)) {
    // Programming error or rogue renderer.
    NOTREACHED() << "Got bad arguments for OnJavaScriptExecuteResponse";
    return;
  }

  std::map<int, JavaScriptResultCallback>::iterator it =
      javascript_callbacks_.find(id);
  if (it != javascript_callbacks_.end()) {
    it->second.Run(result_value);
    javascript_callbacks_.erase(it);
  } else {
    NOTREACHED() << "Received script response for unknown request";
  }
}

#if defined(OS_ANDROID)
void RenderFrameHostImpl::RequestSmartClipExtract(
    ExtractSmartClipDataCallback callback,
    gfx::Rect rect) {
  int32_t callback_id = smart_clip_callbacks_.Add(
      std::make_unique<ExtractSmartClipDataCallback>(std::move(callback)));
  frame_->ExtractSmartClipData(
      rect, base::BindOnce(&RenderFrameHostImpl::OnSmartClipDataExtracted,
                           base::Unretained(this), callback_id));
}

void RenderFrameHostImpl::OnSmartClipDataExtracted(int32_t callback_id,
                                                   const base::string16& text,
                                                   const base::string16& html) {
  std::move(*smart_clip_callbacks_.Lookup(callback_id)).Run(text, html);
  smart_clip_callbacks_.Remove(callback_id);
}
#endif  // defined(OS_ANDROID)

void RenderFrameHostImpl::OnVisualStateResponse(uint64_t id) {
  auto it = visual_state_callbacks_.find(id);
  if (it != visual_state_callbacks_.end()) {
    it->second.Run(true);
    visual_state_callbacks_.erase(it);
  } else {
    NOTREACHED() << "Received script response for unknown request";
  }
}

void RenderFrameHostImpl::OnRunJavaScriptDialog(
    const base::string16& message,
    const base::string16& default_prompt,
    JavaScriptDialogType dialog_type,
    IPC::Message* reply_msg) {
  if (dialog_type == JavaScriptDialogType::JAVASCRIPT_DIALOG_TYPE_ALERT)
    GetFrameResourceCoordinator()->OnAlertFired();

  // Don't show the dialog if it's triggered on a frame that's pending deletion
  // (e.g., from an unload handler), or when the tab is being closed.
  if (IsWaitingForUnloadACK()) {
    SendJavaScriptDialogReply(reply_msg, true, base::string16());
    return;
  }

  int32_t message_length = static_cast<int32_t>(message.length());
  if (GetParent()) {
    UMA_HISTOGRAM_COUNTS("JSDialogs.CharacterCount.Subframe", message_length);
  } else {
    UMA_HISTOGRAM_COUNTS("JSDialogs.CharacterCount.MainFrame", message_length);
  }

  // While a JS message dialog is showing, tabs in the same process shouldn't
  // process input events.
  GetProcess()->SetIgnoreInputEvents(true);

  delegate_->RunJavaScriptDialog(this, message, default_prompt, dialog_type,
                                 reply_msg);
}

void RenderFrameHostImpl::OnRunBeforeUnloadConfirm(
    bool is_reload,
    IPC::Message* reply_msg) {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnRunBeforeUnloadConfirm",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());

  // While a JS beforeunload dialog is showing, tabs in the same process
  // shouldn't process input events.
  GetProcess()->SetIgnoreInputEvents(true);

  // The beforeunload dialog for this frame may have been triggered by a
  // browser-side request to this frame or a frame up in the frame hierarchy.
  // Stop any timers that are waiting.
  for (RenderFrameHostImpl* frame = this; frame; frame = frame->GetParent()) {
    if (frame->beforeunload_timeout_)
      frame->beforeunload_timeout_->Stop();
  }

  delegate_->RunBeforeUnloadConfirm(this, is_reload, reply_msg);
}

void RenderFrameHostImpl::OnRunFileChooser(const FileChooserParams& params) {
  // Do not allow messages with absolute paths in them as this can permit a
  // renderer to coerce the browser to perform I/O on a renderer controlled
  // path.
  if (params.default_file_name != params.default_file_name.BaseName()) {
    bad_message::ReceivedBadMessage(GetProcess(),
                                    bad_message::RFH_FILE_CHOOSER_PATH);
    return;
  }

  delegate_->RunFileChooser(this, params);
}

void RenderFrameHostImpl::RequestTextSurroundingSelection(
    const TextSurroundingSelectionCallback& callback,
    int max_length) {
  DCHECK(!callback.is_null());
  // Only one outstanding request is allowed at any given time.
  // If already one request is in progress, then immediately release callback
  // with empty result.
  if (!text_surrounding_selection_callback_.is_null()) {
    callback.Run(base::string16(), 0, 0);
    return;
  }
  text_surrounding_selection_callback_ = callback;
  Send(
      new FrameMsg_TextSurroundingSelectionRequest(GetRoutingID(), max_length));
}

void RenderFrameHostImpl::OnTextSurroundingSelectionResponse(
    const base::string16& content,
    uint32_t start_offset,
    uint32_t end_offset) {
  // text_surrounding_selection_callback_ should not be null, but don't trust
  // the renderer.
  if (text_surrounding_selection_callback_.is_null())
    return;

  // Just Run the callback instead of propagating further.
  text_surrounding_selection_callback_.Run(content, start_offset, end_offset);
  // Reset the callback for enabling early exit from future request.
  text_surrounding_selection_callback_.Reset();
}

void RenderFrameHostImpl::AllowBindings(int bindings_flags) {
  // Never grant any bindings to browser plugin guests.
  if (GetProcess()->IsForGuestsOnly()) {
    NOTREACHED() << "Never grant bindings to a guest process.";
    return;
  }
  TRACE_EVENT2("navigation", "RenderFrameHostImpl::AllowBindings",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(),
               "bindings flags", bindings_flags);

  // Ensure we aren't granting WebUI bindings to a process that has already
  // been used for non-privileged views.
  if (bindings_flags & BINDINGS_POLICY_WEB_UI &&
      GetProcess()->HasConnection() &&
      !ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
          GetProcess()->GetID())) {
    // This process has no bindings yet. Make sure it does not have more
    // than this single active view.
    // --single-process only has one renderer.
    if (GetProcess()->GetActiveViewCount() > 1 &&
        !base::CommandLine::ForCurrentProcess()->HasSwitch(
            switches::kSingleProcess))
      return;
  }

  if (bindings_flags & BINDINGS_POLICY_WEB_UI) {
    ChildProcessSecurityPolicyImpl::GetInstance()->GrantWebUIBindings(
        GetProcess()->GetID());
  }

  enabled_bindings_ |= bindings_flags;
  if (GetParent())
    DCHECK_EQ(GetParent()->GetEnabledBindings(), GetEnabledBindings());

  if (render_frame_created_) {
    if (!frame_bindings_control_)
      GetRemoteAssociatedInterfaces()->GetInterface(&frame_bindings_control_);
    frame_bindings_control_->AllowBindings(enabled_bindings_);
  }
}

int RenderFrameHostImpl::GetEnabledBindings() const {
  return enabled_bindings_;
}

void RenderFrameHostImpl::DisableBeforeUnloadHangMonitorForTesting() {
  beforeunload_timeout_.reset();
}

bool RenderFrameHostImpl::IsBeforeUnloadHangMonitorDisabledForTesting() {
  return !beforeunload_timeout_;
}

bool RenderFrameHostImpl::IsFeatureEnabled(
    blink::mojom::FeaturePolicyFeature feature) {
  return feature_policy_ && feature_policy_->IsFeatureEnabledForOrigin(
                                feature, GetLastCommittedOrigin());
}

void RenderFrameHostImpl::ViewSource() {
  delegate_->ViewSource(this);
}

void RenderFrameHostImpl::FlushNetworkAndNavigationInterfacesForTesting() {
  DCHECK(network_service_connection_error_handler_holder_);
  network_service_connection_error_handler_holder_.FlushForTesting();

  if (!navigation_control_)
    GetNavigationControl();
  DCHECK(navigation_control_);
  navigation_control_.FlushForTesting();
}

void RenderFrameHostImpl::OnDidAccessInitialDocument() {
  delegate_->DidAccessInitialDocument();
}

void RenderFrameHostImpl::OnDidChangeOpener(int32_t opener_routing_id) {
  frame_tree_node_->render_manager()->DidChangeOpener(opener_routing_id,
                                                      GetSiteInstance());
}

void RenderFrameHostImpl::DidChangeName(const std::string& name,
                                        const std::string& unique_name) {
  if (GetParent() != nullptr) {
    // TODO(lukasza): Call ReceivedBadMessage when |unique_name| is empty.
    DCHECK(!unique_name.empty());
  }
  TRACE_EVENT2("navigation", "RenderFrameHostImpl::OnDidChangeName",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(),
               "name length", name.length());

  std::string old_name = frame_tree_node()->frame_name();
  frame_tree_node()->SetFrameName(name, unique_name);
  if (old_name.empty() && !name.empty())
    frame_tree_node_->render_manager()->CreateProxiesForNewNamedFrame();
  delegate_->DidChangeName(this, name);
}

void RenderFrameHostImpl::DidSetFramePolicyHeaders(
    blink::WebSandboxFlags sandbox_flags,
    const blink::ParsedFeaturePolicy& parsed_header) {
  if (!is_active())
    return;
  // Rebuild the feature policy for this frame.
  ResetFeaturePolicy();
  feature_policy_->SetHeaderPolicy(parsed_header);

  // Update the feature policy and sandbox flags in the frame tree. This will
  // send any updates to proxies if necessary.
  frame_tree_node()->UpdateFramePolicyHeaders(sandbox_flags, parsed_header);

  // Save a copy of the now-active sandbox flags on this RFHI.
  active_sandbox_flags_ = frame_tree_node()->active_sandbox_flags();
}

void RenderFrameHostImpl::OnDidAddContentSecurityPolicies(
    const std::vector<ContentSecurityPolicy>& policies) {
  TRACE_EVENT1("navigation",
               "RenderFrameHostImpl::OnDidAddContentSecurityPolicies",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());

  std::vector<ContentSecurityPolicyHeader> headers;
  for (const ContentSecurityPolicy& policy : policies) {
    AddContentSecurityPolicy(policy);
    headers.push_back(policy.header);
  }
  frame_tree_node()->AddContentSecurityPolicies(headers);
}

void RenderFrameHostImpl::EnforceInsecureRequestPolicy(
    blink::WebInsecureRequestPolicy policy) {
  frame_tree_node()->SetInsecureRequestPolicy(policy);
}

void RenderFrameHostImpl::EnforceInsecureNavigationsSet(
    const std::vector<uint32_t>& set) {
  frame_tree_node()->SetInsecureNavigationsSet(set);
}

FrameTreeNode* RenderFrameHostImpl::FindAndVerifyChild(
    int32_t child_frame_routing_id,
    bad_message::BadMessageReason reason) {
  FrameTreeNode* child = frame_tree_node()->frame_tree()->FindByRoutingID(
      GetProcess()->GetID(), child_frame_routing_id);
  // A race can result in |child| to be nullptr. Avoid killing the renderer in
  // that case.
  if (child && child->parent() != frame_tree_node()) {
    bad_message::ReceivedBadMessage(GetProcess(), reason);
    return nullptr;
  }
  return child;
}

void RenderFrameHostImpl::OnDidChangeFramePolicy(
    int32_t frame_routing_id,
    const blink::FramePolicy& frame_policy) {
  // Ensure that a frame can only update sandbox flags or feature policy for its
  // immediate children.  If this is not the case, the renderer is considered
  // malicious and is killed.
  FrameTreeNode* child = FindAndVerifyChild(
      // TODO(iclelland): Rename this message
      frame_routing_id, bad_message::RFH_SANDBOX_FLAGS);
  if (!child)
    return;

  child->SetPendingFramePolicy(frame_policy);

  // Notify the RenderFrame if it lives in a different process from its parent.
  // The frame's proxies in other processes also need to learn about the updated
  // flags and policy, but these notifications are sent later in
  // RenderFrameHostManager::CommitPendingFramePolicy(), when the frame
  // navigates and the new policies take effect.
  RenderFrameHost* child_rfh = child->current_frame_host();
  if (child_rfh->GetSiteInstance() != GetSiteInstance()) {
    child_rfh->Send(new FrameMsg_DidUpdateFramePolicy(child_rfh->GetRoutingID(),
                                                      frame_policy));
  }
}

void RenderFrameHostImpl::OnDidChangeFrameOwnerProperties(
    int32_t frame_routing_id,
    const FrameOwnerProperties& properties) {
  FrameTreeNode* child = FindAndVerifyChild(
      frame_routing_id, bad_message::RFH_OWNER_PROPERTY);
  if (!child)
    return;

  child->set_frame_owner_properties(properties);

  child->render_manager()->OnDidUpdateFrameOwnerProperties(properties);
}

void RenderFrameHostImpl::OnUpdateTitle(
    const base::string16& title,
    blink::WebTextDirection title_direction) {
  // This message should only be sent for top-level frames.
  if (frame_tree_node_->parent())
    return;

  if (title.length() > kMaxTitleChars) {
    NOTREACHED() << "Renderer sent too many characters in title.";
    return;
  }

  delegate_->UpdateTitle(
      this, title, WebTextDirectionToChromeTextDirection(title_direction));
}

void RenderFrameHostImpl::UpdateEncoding(const std::string& encoding_name) {
  // This message is only sent for top-level frames. TODO(avi): when frame tree
  // mirroring works correctly, add a check here to enforce it.
  delegate_->UpdateEncoding(this, encoding_name);
}

void RenderFrameHostImpl::FrameSizeChanged(const gfx::Size& frame_size) {
  frame_size_ = frame_size;
}

void RenderFrameHostImpl::OnUpdatePictureInPictureSurfaceId(
    const viz::SurfaceId& surface_id,
    const gfx::Size& natural_size) {
  if (delegate_)
    delegate_->UpdatePictureInPictureSurfaceId(surface_id, natural_size);
}

void RenderFrameHostImpl::OnDidBlockFramebust(const GURL& url) {
  delegate_->OnDidBlockFramebust(url);
}

void RenderFrameHostImpl::OnAbortNavigation() {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnAbortNavigation",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());
  if (!is_active())
    return;
  frame_tree_node()->navigator()->OnAbortNavigation(frame_tree_node());
}

void RenderFrameHostImpl::OnForwardResourceTimingToParent(
    const ResourceTimingInfo& resource_timing) {
  // Don't forward the resource timing if this RFH is pending deletion. This can
  // happen in a race where this RenderFrameHost finishes loading just after
  // the frame navigates away. See https://crbug.com/626802.
  if (!is_active())
    return;

  // We should never be receiving this message from a speculative RFH.
  DCHECK(IsCurrent());

  RenderFrameProxyHost* proxy =
      frame_tree_node()->render_manager()->GetProxyToParent();
  if (!proxy) {
    bad_message::ReceivedBadMessage(GetProcess(),
                                    bad_message::RFH_NO_PROXY_TO_PARENT);
    return;
  }
  proxy->Send(new FrameMsg_ForwardResourceTimingToParent(proxy->GetRoutingID(),
                                                         resource_timing));
}

void RenderFrameHostImpl::OnDispatchLoad() {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnDispatchLoad",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());

  // Don't forward the load event if this RFH is pending deletion. This can
  // happen in a race where this RenderFrameHost finishes loading just after
  // the frame navigates away. See https://crbug.com/626802.
  if (!is_active())
    return;

  // We should never be receiving this message from a speculative RFH.
  DCHECK(IsCurrent());

  // Only frames with an out-of-process parent frame should be sending this
  // message.
  RenderFrameProxyHost* proxy =
      frame_tree_node()->render_manager()->GetProxyToParent();
  if (!proxy) {
    bad_message::ReceivedBadMessage(GetProcess(),
                                    bad_message::RFH_NO_PROXY_TO_PARENT);
    return;
  }

  proxy->Send(new FrameMsg_DispatchLoad(proxy->GetRoutingID()));
}

RenderWidgetHostViewBase* RenderFrameHostImpl::GetViewForAccessibility() {
  return static_cast<RenderWidgetHostViewBase*>(
      frame_tree_node_->IsMainFrame()
          ? render_view_host_->GetWidget()->GetView()
          : frame_tree_node_->frame_tree()
                ->GetMainFrame()
                ->render_view_host_->GetWidget()
                ->GetView());
}

void RenderFrameHostImpl::OnAccessibilityEvents(
    const std::vector<AccessibilityHostMsg_EventParams>& params,
    int reset_token, int ack_token) {
  // Don't process this IPC if either we're waiting on a reset and this
  // IPC doesn't have the matching token ID, or if we're not waiting on a
  // reset but this message includes a reset token.
  if (accessibility_reset_token_ != reset_token) {
    Send(new AccessibilityMsg_Events_ACK(routing_id_, ack_token));
    return;
  }
  accessibility_reset_token_ = 0;

  RenderWidgetHostViewBase* view = GetViewForAccessibility();
  ui::AXMode accessibility_mode = delegate_->GetAccessibilityMode();
  if (!accessibility_mode.is_mode_off() && view && is_active()) {
    if (accessibility_mode.has_mode(ui::AXMode::kNativeAPIs))
      GetOrCreateBrowserAccessibilityManager();

    std::vector<AXEventNotificationDetails> details;
    details.reserve(params.size());
    for (size_t i = 0; i < params.size(); ++i) {
      const AccessibilityHostMsg_EventParams& param = params[i];
      AXEventNotificationDetails detail;
      detail.event_type = param.event_type;
      detail.id = param.id;
      detail.ax_tree_id = GetAXTreeID();
      detail.event_from = param.event_from;
      detail.action_request_id = param.action_request_id;
      if (param.update.has_tree_data) {
        detail.update.has_tree_data = true;
        ax_content_tree_data_ = param.update.tree_data;
        AXContentTreeDataToAXTreeData(&detail.update.tree_data);
      }
      detail.update.root_id = param.update.root_id;
      detail.update.node_id_to_clear = param.update.node_id_to_clear;
      detail.update.nodes.resize(param.update.nodes.size());
      for (size_t j = 0; j < param.update.nodes.size(); ++j) {
        AXContentNodeDataToAXNodeData(param.update.nodes[j],
                                      &detail.update.nodes[j]);
      }
      details.push_back(detail);
    }

    if (accessibility_mode.has_mode(ui::AXMode::kNativeAPIs)) {
      if (browser_accessibility_manager_)
        browser_accessibility_manager_->OnAccessibilityEvents(details);
    }

    delegate_->AccessibilityEventReceived(details);

    // For testing only.
    if (!accessibility_testing_callback_.is_null()) {
      for (size_t i = 0; i < details.size(); i++) {
        const AXEventNotificationDetails& detail = details[i];
        if (static_cast<int>(detail.event_type) < 0)
          continue;

        if (!ax_tree_for_testing_) {
          if (browser_accessibility_manager_) {
            ax_tree_for_testing_.reset(new ui::AXTree(
                browser_accessibility_manager_->SnapshotAXTreeForTesting()));
          } else {
            ax_tree_for_testing_.reset(new ui::AXTree());
            CHECK(ax_tree_for_testing_->Unserialize(detail.update))
                << ax_tree_for_testing_->error();
          }
        } else {
          CHECK(ax_tree_for_testing_->Unserialize(detail.update))
              << ax_tree_for_testing_->error();
        }
        accessibility_testing_callback_.Run(this, detail.event_type, detail.id);
      }
    }
  }

  // Always send an ACK or the renderer can be in a bad state.
  Send(new AccessibilityMsg_Events_ACK(routing_id_, ack_token));
}

void RenderFrameHostImpl::OnAccessibilityLocationChanges(
    const std::vector<AccessibilityHostMsg_LocationChangeParams>& params) {
  if (accessibility_reset_token_)
    return;

  RenderWidgetHostViewBase* view = static_cast<RenderWidgetHostViewBase*>(
      render_view_host_->GetWidget()->GetView());
  if (view && is_active()) {
    ui::AXMode accessibility_mode = delegate_->GetAccessibilityMode();
    if (accessibility_mode.has_mode(ui::AXMode::kNativeAPIs)) {
      BrowserAccessibilityManager* manager =
          GetOrCreateBrowserAccessibilityManager();
      if (manager)
        manager->OnLocationChanges(params);
    }

    // Send the updates to the automation extension API.
    std::vector<AXLocationChangeNotificationDetails> details;
    details.reserve(params.size());
    for (size_t i = 0; i < params.size(); ++i) {
      const AccessibilityHostMsg_LocationChangeParams& param = params[i];
      AXLocationChangeNotificationDetails detail;
      detail.id = param.id;
      detail.ax_tree_id = GetAXTreeID();
      detail.new_location = param.new_location;
      details.push_back(detail);
    }
    delegate_->AccessibilityLocationChangesReceived(details);
  }
}

void RenderFrameHostImpl::OnAccessibilityFindInPageResult(
    const AccessibilityHostMsg_FindInPageResultParams& params) {
  ui::AXMode accessibility_mode = delegate_->GetAccessibilityMode();
  if (accessibility_mode.has_mode(ui::AXMode::kNativeAPIs)) {
    BrowserAccessibilityManager* manager =
        GetOrCreateBrowserAccessibilityManager();
    if (manager) {
      manager->OnFindInPageResult(
          params.request_id, params.match_index, params.start_id,
          params.start_offset, params.end_id, params.end_offset);
    }
  }
}

void RenderFrameHostImpl::OnAccessibilityChildFrameHitTestResult(
    int action_request_id,
    const gfx::Point& point,
    int child_frame_routing_id,
    int child_frame_browser_plugin_instance_id,
    ax::mojom::Event event_to_fire) {
  RenderFrameHostImpl* child_frame = nullptr;
  if (child_frame_routing_id) {
    RenderFrameProxyHost* rfph = nullptr;
    LookupRenderFrameHostOrProxy(GetProcess()->GetID(), child_frame_routing_id,
                                 &child_frame, &rfph);
    if (rfph)
      child_frame = rfph->frame_tree_node()->current_frame_host();
  } else if (child_frame_browser_plugin_instance_id) {
    child_frame =
        static_cast<RenderFrameHostImpl*>(delegate()->GetGuestByInstanceID(
            this, child_frame_browser_plugin_instance_id));
  } else {
    NOTREACHED();
  }

  if (!child_frame)
    return;

  ui::AXActionData action_data;
  action_data.request_id = action_request_id;
  action_data.target_point = point;
  action_data.action = ax::mojom::Action::kHitTest;
  action_data.hit_test_event_to_fire = event_to_fire;

  child_frame->AccessibilityPerformAction(action_data);
}

void RenderFrameHostImpl::OnAccessibilitySnapshotResponse(
    int callback_id,
    const AXContentTreeUpdate& snapshot) {
  const auto& it = ax_tree_snapshot_callbacks_.find(callback_id);
  if (it != ax_tree_snapshot_callbacks_.end()) {
    ui::AXTreeUpdate dst_snapshot;
    dst_snapshot.root_id = snapshot.root_id;
    dst_snapshot.nodes.resize(snapshot.nodes.size());
    for (size_t i = 0; i < snapshot.nodes.size(); ++i) {
      AXContentNodeDataToAXNodeData(snapshot.nodes[i],
                                    &dst_snapshot.nodes[i]);
    }
    if (snapshot.has_tree_data) {
      ax_content_tree_data_ = snapshot.tree_data;
      AXContentTreeDataToAXTreeData(&dst_snapshot.tree_data);
      dst_snapshot.has_tree_data = true;
    }
    std::move(it->second).Run(dst_snapshot);
    ax_tree_snapshot_callbacks_.erase(it);
  } else {
    NOTREACHED() << "Received AX tree snapshot response for unknown id";
  }
}

// TODO(alexmos): When the allowFullscreen flag is known in the browser
// process, use it to double-check that fullscreen can be entered here.
void RenderFrameHostImpl::OnEnterFullscreen(
    const blink::WebFullscreenOptions& options) {
  // Entering fullscreen from a cross-process subframe also affects all
  // renderers for ancestor frames, which will need to apply fullscreen CSS to
  // appropriate ancestor <iframe> elements, fire fullscreenchange events, etc.
  // Thus, walk through the ancestor chain of this frame and for each (parent,
  // child) pair, send a message about the pending fullscreen change to the
  // child's proxy in parent's SiteInstance. The renderer process will use this
  // to find the <iframe> element in the parent frame that will need fullscreen
  // styles. This is done at most once per SiteInstance: for example, with a
  // A-B-A-B hierarchy, if the bottom frame goes fullscreen, this only needs to
  // notify its parent, and Blink-side logic will take care of applying
  // necessary changes to the other two ancestors.
  std::set<SiteInstance*> notified_instances;
  notified_instances.insert(GetSiteInstance());
  for (FrameTreeNode* node = frame_tree_node_; node->parent();
       node = node->parent()) {
    SiteInstance* parent_site_instance =
        node->parent()->current_frame_host()->GetSiteInstance();
    if (ContainsKey(notified_instances, parent_site_instance))
      continue;

    RenderFrameProxyHost* child_proxy =
        node->render_manager()->GetRenderFrameProxyHost(parent_site_instance);
    child_proxy->Send(
        new FrameMsg_WillEnterFullscreen(child_proxy->GetRoutingID()));
    notified_instances.insert(parent_site_instance);
  }

  // TODO(alexmos): See if this can use the last committed origin instead.
  delegate_->EnterFullscreenMode(GetLastCommittedURL().GetOrigin(), options);

  // The previous call might change the fullscreen state. We need to make sure
  // the renderer is aware of that, which is done via the resize message.
  // Typically, this will be sent as part of the call on the |delegate_| above
  // when resizing the native windows, but sometimes fullscreen can be entered
  // without causing a resize, so we need to ensure that the resize message is
  // sent in that case. We always send this to the main frame's widget, and if
  // there are any OOPIF widgets, this will also trigger them to resize via
  // frameRectsChanged.
  render_view_host_->GetWidget()->SynchronizeVisualProperties();
}

// TODO(alexmos): When the allowFullscreen flag is known in the browser
// process, use it to double-check that fullscreen can be entered here.
void RenderFrameHostImpl::OnExitFullscreen() {
  delegate_->ExitFullscreenMode(/* will_cause_resize */ true);

  // The previous call might change the fullscreen state. We need to make sure
  // the renderer is aware of that, which is done via the resize message.
  // Typically, this will be sent as part of the call on the |delegate_| above
  // when resizing the native windows, but sometimes fullscreen can be entered
  // without causing a resize, so we need to ensure that the resize message is
  // sent in that case. We always send this to the main frame's widget, and if
  // there are any OOPIF widgets, this will also trigger them to resize via
  // frameRectsChanged.
  render_view_host_->GetWidget()->SynchronizeVisualProperties();
}

// TODO(clamy): Remove this IPC now that it is only used for same-document
// navigations.
void RenderFrameHostImpl::OnDidStartLoading(bool to_different_document) {
  TRACE_EVENT2("navigation", "RenderFrameHostImpl::OnDidStartLoading",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(),
               "to different document", to_different_document);

  if (to_different_document) {
    bad_message::ReceivedBadMessage(GetProcess(),
                                    bad_message::RFH_UNEXPECTED_LOAD_START);
    return;
  }
  bool was_previously_loading = frame_tree_node_->frame_tree()->IsLoading();
  is_loading_ = true;

  // Only inform the FrameTreeNode of a change in load state if the load state
  // of this RenderFrameHost is being tracked.
  if (is_active()) {
    frame_tree_node_->DidStartLoading(to_different_document,
                                      was_previously_loading);
  }
}

void RenderFrameHostImpl::OnSuddenTerminationDisablerChanged(
    bool present,
    blink::WebSuddenTerminationDisablerType disabler_type) {
  DCHECK_NE(GetSuddenTerminationDisablerState(disabler_type), present);
  if (present) {
    sudden_termination_disabler_types_enabled_ |= disabler_type;
  } else {
    sudden_termination_disabler_types_enabled_ &= ~disabler_type;
  }
}

bool RenderFrameHostImpl::GetSuddenTerminationDisablerState(
    blink::WebSuddenTerminationDisablerType disabler_type) {
  return (sudden_termination_disabler_types_enabled_ & disabler_type) != 0;
}

void RenderFrameHostImpl::OnDidStopLoading() {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnDidStopLoading",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());

  // This method should never be called when the frame is not loading.
  // Unfortunately, it can happen if a history navigation happens during a
  // BeforeUnload or Unload event.
  // TODO(fdegans): Change this to a DCHECK after LoadEventProgress has been
  // refactored in Blink. See crbug.com/466089
  if (!is_loading_)
    return;

  was_discarded_ = false;
  is_loading_ = false;
  navigation_request_.reset();

  // Only inform the FrameTreeNode of a change in load state if the load state
  // of this RenderFrameHost is being tracked.
  if (is_active())
    frame_tree_node_->DidStopLoading();
}

void RenderFrameHostImpl::OnDidChangeLoadProgress(double load_progress) {
  frame_tree_node_->DidChangeLoadProgress(load_progress);
}

void RenderFrameHostImpl::OnSerializeAsMHTMLResponse(
    int job_id,
    MhtmlSaveStatus save_status,
    const std::set<std::string>& digests_of_uris_of_serialized_resources,
    base::TimeDelta renderer_main_thread_time) {
  MHTMLGenerationManager::GetInstance()->OnSerializeAsMHTMLResponse(
      this, job_id, save_status, digests_of_uris_of_serialized_resources,
      renderer_main_thread_time);
}

void RenderFrameHostImpl::OnSelectionChanged(const base::string16& text,
                                             uint32_t offset,
                                             const gfx::Range& range) {
  has_selection_ = !text.empty();
  GetRenderWidgetHost()->SelectionChanged(text, offset, range);
}

void RenderFrameHostImpl::OnFocusedNodeChanged(
    bool is_editable_element,
    const gfx::Rect& bounds_in_frame_widget) {
  if (!GetView())
    return;

  has_focused_editable_element_ = is_editable_element;
  // First convert the bounds to root view.
  delegate_->OnFocusedElementChangedInFrame(
      this, gfx::Rect(GetView()->TransformPointToRootCoordSpace(
                          bounds_in_frame_widget.origin()),
                      bounds_in_frame_widget.size()));
}

void RenderFrameHostImpl::NotifyUserActivation() {
  Send(new FrameMsg_NotifyUserActivation(routing_id_));
}

void RenderFrameHostImpl::OnSetHasReceivedUserGesture() {
  frame_tree_node_->OnSetHasReceivedUserGesture();
}

void RenderFrameHostImpl::OnSetHasReceivedUserGestureBeforeNavigation(
    bool value) {
  frame_tree_node_->OnSetHasReceivedUserGestureBeforeNavigation(value);
}

void RenderFrameHostImpl::OnScrollRectToVisibleInParentFrame(
    const gfx::Rect& rect_to_scroll,
    const blink::WebScrollIntoViewParams& params) {
  RenderFrameProxyHost* proxy =
      frame_tree_node_->render_manager()->GetProxyToParent();
  if (!proxy)
    return;
  proxy->ScrollRectToVisible(rect_to_scroll, params);
}

void RenderFrameHostImpl::OnFrameDidCallFocus() {
  delegate_->DidCallFocus();
}

#if BUILDFLAG(USE_EXTERNAL_POPUP_MENU)
void RenderFrameHostImpl::OnShowPopup(
    const FrameHostMsg_ShowPopup_Params& params) {
  RenderViewHostDelegateView* view =
      render_view_host_->delegate_->GetDelegateView();
  if (view) {
    gfx::Point original_point(params.bounds.x(), params.bounds.y());
    gfx::Point transformed_point =
        static_cast<RenderWidgetHostViewBase*>(GetView())
            ->TransformPointToRootCoordSpace(original_point);
    gfx::Rect transformed_bounds(transformed_point.x(), transformed_point.y(),
                                 params.bounds.width(), params.bounds.height());
    view->ShowPopupMenu(this, transformed_bounds, params.item_height,
                        params.item_font_size, params.selected_item,
                        params.popup_items, params.right_aligned,
                        params.allow_multiple_selection);
  }
}

void RenderFrameHostImpl::OnHidePopup() {
  RenderViewHostDelegateView* view =
      render_view_host_->delegate_->GetDelegateView();
  if (view)
    view->HidePopupMenu();
}
#endif

void RenderFrameHostImpl::OnRequestOverlayRoutingToken() {
  // Make sure that we have a token.
  GetOverlayRoutingToken();

  Send(new FrameMsg_SetOverlayRoutingToken(routing_id_,
                                           *overlay_routing_token_));
}

void RenderFrameHostImpl::BindInterfaceProviderRequest(
    service_manager::mojom::InterfaceProviderRequest
        interface_provider_request) {
  DCHECK(!document_scoped_interface_provider_binding_.is_bound());
  DCHECK(interface_provider_request.is_pending());
  document_scoped_interface_provider_binding_.Bind(
      FilterRendererExposedInterfaces(mojom::kNavigation_FrameSpec,
                                      GetProcess()->GetID(),
                                      std::move(interface_provider_request)));
}

void RenderFrameHostImpl::SetKeepAliveTimeoutForTesting(
    base::TimeDelta timeout) {
  keep_alive_timeout_ = timeout;
  if (keep_alive_handle_factory_)
    keep_alive_handle_factory_->SetTimeout(keep_alive_timeout_);
}

void RenderFrameHostImpl::OnShowCreatedWindow(int pending_widget_routing_id,
                                              WindowOpenDisposition disposition,
                                              const gfx::Rect& initial_rect,
                                              bool user_gesture) {
  delegate_->ShowCreatedWindow(GetProcess()->GetID(), pending_widget_routing_id,
                               disposition, initial_rect, user_gesture);
}

void RenderFrameHostImpl::CreateNewWindow(
    mojom::CreateNewWindowParamsPtr params,
    CreateNewWindowCallback callback) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  TRACE_EVENT2("navigation", "RenderFrameHostImpl::CreateNewWindow",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(), "url",
               params->target_url.possibly_invalid_spec());

  bool no_javascript_access = false;

  // Filter out URLs to which navigation is disallowed from this context.
  //
  // Note that currently, "javascript:" URLs and empty strings (both of which
  // are legal arguments to window.open) make it here; FilterURL rewrites them
  // to "about:blank" -- they shouldn't be cancelled.
  GetProcess()->FilterURL(false, &params->target_url);
  if (!GetContentClient()->browser()->ShouldAllowOpenURL(GetSiteInstance(),
                                                         params->target_url)) {
    params->target_url = GURL(url::kAboutBlankURL);
  }

  // Ignore window creation when sent from a frame that's not current or
  // created.
  bool can_create_window =
      IsCurrent() && render_frame_created_ &&
      GetContentClient()->browser()->CanCreateWindow(
          this, GetLastCommittedURL(),
          frame_tree_node_->frame_tree()->GetMainFrame()->GetLastCommittedURL(),
          last_committed_origin_.GetURL(), params->window_container_type,
          params->target_url, params->referrer, params->frame_name,
          params->disposition, *params->features, params->user_gesture,
          params->opener_suppressed, &no_javascript_access);

  if (!can_create_window) {
    std::move(callback).Run(mojom::CreateNewWindowStatus::kIgnore, nullptr);
    return;
  }

  // For Android WebView, we support a pop-up like behavior for window.open()
  // even if the embedding app doesn't support multiple windows. In this case,
  // window.open() will return "window" and navigate it to whatever URL was
  // passed.
  if (!render_view_host_->GetWebkitPreferences().supports_multiple_windows) {
    std::move(callback).Run(mojom::CreateNewWindowStatus::kReuse, nullptr);
    return;
  }

  // This will clone the sessionStorage for namespace_id_to_clone.
  StoragePartition* storage_partition = BrowserContext::GetStoragePartition(
      GetSiteInstance()->GetBrowserContext(), GetSiteInstance());
  DOMStorageContextWrapper* dom_storage_context =
      static_cast<DOMStorageContextWrapper*>(
          storage_partition->GetDOMStorageContext());

  scoped_refptr<SessionStorageNamespaceImpl> cloned_namespace;
  if (base::FeatureList::IsEnabled(features::kMojoSessionStorage)) {
    // Any cloning should have already happened using the mojo
    // SessionStorageNamespace::Clone in storage_partition_service.mojom.
    cloned_namespace = SessionStorageNamespaceImpl::Create(
        dom_storage_context, params->session_storage_namespace_id);
  } else {
    cloned_namespace = SessionStorageNamespaceImpl::CloneFrom(
        dom_storage_context, params->session_storage_namespace_id,
        params->clone_from_session_storage_namespace_id);
  }

  // If the opener is suppressed or script access is disallowed, we should
  // open the window in a new BrowsingInstance, and thus a new process. That
  // means the current renderer process will not be able to route messages to
  // it. Because of this, we will immediately show and navigate the window
  // in OnCreateNewWindowOnUI, using the params provided here.
  int render_view_route_id = MSG_ROUTING_NONE;
  int main_frame_route_id = MSG_ROUTING_NONE;
  int main_frame_widget_route_id = MSG_ROUTING_NONE;
  int render_process_id = GetProcess()->GetID();
  if (!params->opener_suppressed && !no_javascript_access) {
    render_view_route_id = GetProcess()->GetNextRoutingID();
    main_frame_route_id = GetProcess()->GetNextRoutingID();
    // TODO(avi): When RenderViewHostImpl has-a RenderWidgetHostImpl, this
    // should be updated to give the widget a distinct routing ID.
    // https://crbug.com/545684
    main_frame_widget_route_id = render_view_route_id;
    // Block resource requests until the frame is created, since the HWND might
    // be needed if a response ends up creating a plugin. We'll only have a
    // single frame at this point. These requests will be resumed either in
    // WebContentsImpl::CreateNewWindow or RenderFrameHost::Init.
    // TODO(crbug.com/581037): Now that NPAPI is deprecated we should be able to
    // remove this, but more investigation is needed.
    auto block_requests_for_route = base::Bind(
        [](const GlobalFrameRoutingId& id) {
          auto* rdh = ResourceDispatcherHostImpl::Get();
          if (rdh)
            rdh->BlockRequestsForRoute(id);
        },
        GlobalFrameRoutingId(render_process_id, main_frame_route_id));
    BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                            std::move(block_requests_for_route));
  }

  DCHECK(IsRenderFrameLive());

  delegate_->CreateNewWindow(this, render_view_route_id, main_frame_route_id,
                             main_frame_widget_route_id, *params,
                             cloned_namespace.get());

  if (main_frame_route_id == MSG_ROUTING_NONE) {
    // Opener suppressed or Javascript access disabled. Never tell the renderer
    // about the new window.
    std::move(callback).Run(mojom::CreateNewWindowStatus::kIgnore, nullptr);
    return;
  }

  bool succeeded =
      RenderWidgetHost::FromID(render_process_id, main_frame_widget_route_id) !=
      nullptr;
  if (!succeeded) {
    // If we did not create a WebContents to host the renderer-created
    // RenderFrame/RenderView/RenderWidget objects, signal failure to the
    // renderer.
    DCHECK(!RenderFrameHost::FromID(render_process_id, main_frame_route_id));
    DCHECK(!RenderViewHost::FromID(render_process_id, render_view_route_id));
    std::move(callback).Run(mojom::CreateNewWindowStatus::kIgnore, nullptr);
    return;
  }

  // The view, widget, and frame should all be routable now.
  DCHECK(RenderViewHost::FromID(render_process_id, render_view_route_id));
  RenderFrameHostImpl* rfh =
      RenderFrameHostImpl::FromID(GetProcess()->GetID(), main_frame_route_id);
  DCHECK(rfh);

  service_manager::mojom::InterfaceProviderPtrInfo
      main_frame_interface_provider_info;
  rfh->BindInterfaceProviderRequest(
      mojo::MakeRequest(&main_frame_interface_provider_info));

  mojom::CreateNewWindowReplyPtr reply = mojom::CreateNewWindowReply::New(
      render_view_route_id, main_frame_route_id, main_frame_widget_route_id,
      std::move(main_frame_interface_provider_info), cloned_namespace->id(),
      rfh->GetDevToolsFrameToken());
  std::move(callback).Run(mojom::CreateNewWindowStatus::kSuccess,
                          std::move(reply));
}

void RenderFrameHostImpl::IssueKeepAliveHandle(
    mojom::KeepAliveHandleRequest request) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (GetProcess()->IsKeepAliveRefCountDisabled())
    return;

  if (!keep_alive_handle_factory_) {
    keep_alive_handle_factory_ =
        std::make_unique<KeepAliveHandleFactory>(GetProcess());
    keep_alive_handle_factory_->SetTimeout(keep_alive_timeout_);
  }
  keep_alive_handle_factory_->Create(std::move(request));
}

// TODO(ahemery): Move message checks to a StructTraits file when possible,
//  otherwise mojo bad message reporting.
void RenderFrameHostImpl::BeginNavigation(
    const CommonNavigationParams& common_params,
    mojom::BeginNavigationParamsPtr begin_params,
    blink::mojom::BlobURLTokenPtr blob_url_token) {
  if (!is_active())
    return;

  TRACE_EVENT2("navigation", "RenderFrameHostImpl::BeginNavigation",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(), "url",
               common_params.url.possibly_invalid_spec());

  CommonNavigationParams validated_params = common_params;
  GetProcess()->FilterURL(false, &validated_params.url);
  if (!validated_params.base_url_for_data_url.is_empty()) {
    // Kills the process. http://crbug.com/726142
    bad_message::ReceivedBadMessage(
        GetProcess(), bad_message::RFH_BASE_URL_FOR_DATA_URL_SPECIFIED);
    return;
  }

  GetProcess()->FilterURL(true, &begin_params->searchable_form_url);

  if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadRequestBody(
          GetSiteInstance(), validated_params.post_data)) {
    bad_message::ReceivedBadMessage(GetProcess(),
                                    bad_message::RFH_ILLEGAL_UPLOAD_PARAMS);
    return;
  }

  if (validated_params.url.SchemeIs(kChromeErrorScheme)) {
    mojo::ReportBadMessage("Renderer cannot request error page URLs directly");
    return;
  }

  if (blob_url_token && !validated_params.url.SchemeIsBlob()) {
    mojo::ReportBadMessage("Blob URL Token, but not a blob: URL");
    return;
  }
  scoped_refptr<network::SharedURLLoaderFactory> blob_url_loader_factory;
  if (blob_url_token) {
    blob_url_loader_factory =
        ChromeBlobStorageContext::URLLoaderFactoryForToken(
            GetSiteInstance()->GetBrowserContext(), std::move(blob_url_token));
  }

  if (waiting_for_init_) {
    pending_navigate_ = std::make_unique<PendingNavigation>(
        validated_params, std::move(begin_params),
        std::move(blob_url_loader_factory));
    return;
  }

  frame_tree_node()->navigator()->OnBeginNavigation(
      frame_tree_node(), validated_params, std::move(begin_params),
      std::move(blob_url_loader_factory));
}

void RenderFrameHostImpl::SubresourceResponseStarted(
    const GURL& url,
    net::CertStatus cert_status) {
  delegate_->SubresourceResponseStarted(url, cert_status);
}

void RenderFrameHostImpl::ResourceLoadComplete(
    mojom::ResourceLoadInfoPtr resource_load_info) {
  delegate_->ResourceLoadComplete(this, std::move(resource_load_info));
}

namespace {

void GetRestrictedCookieManager(
    RenderFrameHostImpl* render_frame_host_impl,
    network::mojom::RestrictedCookieManagerRequest request) {
  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableExperimentalWebPlatformFeatures)) {
    return;
  }

  BrowserContext* browser_context =
      render_frame_host_impl->GetProcess()->GetBrowserContext();
  StoragePartition* storage_partition =
      BrowserContext::GetDefaultStoragePartition(browser_context);
  network::mojom::NetworkContext* network_context =
      storage_partition->GetNetworkContext();
  uint32_t render_process_id = render_frame_host_impl->GetProcess()->GetID();
  uint32_t render_frame_id = render_frame_host_impl->GetRoutingID();
  network_context->GetRestrictedCookieManager(
      std::move(request), render_process_id, render_frame_id);
}

}  // anonymous namespace

void RenderFrameHostImpl::RegisterMojoInterfaces() {
#if !defined(OS_ANDROID)
  // The default (no-op) implementation of InstalledAppProvider. On Android, the
  // real implementation is provided in Java.
  registry_->AddInterface(base::Bind(&InstalledAppProviderImplDefault::Create));
#endif  // !defined(OS_ANDROID)

  PermissionManager* permission_manager =
      GetProcess()->GetBrowserContext()->GetPermissionManager();

  if (delegate_) {
    auto* geolocation_context = delegate_->GetGeolocationContext();
    if (geolocation_context && permission_manager) {
      geolocation_service_.reset(new GeolocationServiceImpl(
          geolocation_context, permission_manager, this));
      // NOTE: Both the |interface_registry_| and |geolocation_service_| are
      // owned by |this|, so their destruction will be triggered together.
      // |interface_registry_| is declared after |geolocation_service_|, so it
      // will be destroyed prior to |geolocation_service_|.
      registry_->AddInterface(
          base::Bind(&GeolocationServiceImpl::Bind,
                     base::Unretained(geolocation_service_.get())));
    }
  }

  registry_->AddInterface<device::mojom::WakeLock>(base::Bind(
      &RenderFrameHostImpl::BindWakeLockRequest, base::Unretained(this)));

#if defined(OS_ANDROID)
  if (base::FeatureList::IsEnabled(features::kWebNfc)) {
    registry_->AddInterface<device::mojom::NFC>(base::Bind(
        &RenderFrameHostImpl::BindNFCRequest, base::Unretained(this)));
  }
#endif

  if (!permission_service_context_)
    permission_service_context_.reset(new PermissionServiceContext(this));

  registry_->AddInterface(
      base::Bind(&PermissionServiceContext::CreateService,
                 base::Unretained(permission_service_context_.get())));

  registry_->AddInterface(
      base::Bind(&RenderFrameHostImpl::BindPresentationServiceRequest,
                 base::Unretained(this)));

  registry_->AddInterface(
      base::Bind(&MediaSessionServiceImpl::Create, base::Unretained(this)));

  registry_->AddInterface(base::Bind(
      base::IgnoreResult(&RenderFrameHostImpl::CreateWebBluetoothService),
      base::Unretained(this)));

  registry_->AddInterface(base::BindRepeating(
      &RenderFrameHostImpl::CreateUsbDeviceManager, base::Unretained(this)));

  registry_->AddInterface(base::BindRepeating(
      &RenderFrameHostImpl::CreateUsbChooserService, base::Unretained(this)));

  registry_->AddInterface<media::mojom::InterfaceFactory>(
      base::Bind(&RenderFrameHostImpl::BindMediaInterfaceFactoryRequest,
                 base::Unretained(this)));

  registry_->AddInterface(base::BindRepeating(
      &RenderFrameHostImpl::CreateWebSocket, base::Unretained(this)));

  registry_->AddInterface(base::BindRepeating(
      &RenderFrameHostImpl::CreateDedicatedWorkerHostFactory,
      base::Unretained(this)));

  registry_->AddInterface(base::Bind(&SharedWorkerConnectorImpl::Create,
                                     process_->GetID(), routing_id_));

  registry_->AddInterface<device::mojom::VRService>(base::Bind(
      &WebvrServiceProvider::BindWebvrService, base::Unretained(this)));

  registry_->AddInterface(
      base::BindRepeating(&RenderFrameHostImpl::CreateAudioInputStreamFactory,
                          base::Unretained(this)));

  registry_->AddInterface(
      base::BindRepeating(&RenderFrameHostImpl::CreateAudioOutputStreamFactory,
                          base::Unretained(this)));

  if (resource_coordinator::IsResourceCoordinatorEnabled()) {
    registry_->AddInterface(
        base::Bind(&CreateFrameResourceCoordinator, base::Unretained(this)));
  }

#if BUILDFLAG(ENABLE_WEBRTC)
  // BrowserMainLoop::GetInstance() may be null on unit tests.
  if (BrowserMainLoop::GetInstance()) {
    // BrowserMainLoop, which owns MediaStreamManager, is alive for the lifetime
    // of Mojo communication (see BrowserMainLoop::ShutdownThreadsAndCleanUp(),
    // which shuts down Mojo). Hence, passing that MediaStreamManager instance
    // as a raw pointer here is safe.
    MediaStreamManager* media_stream_manager =
        BrowserMainLoop::GetInstance()->media_stream_manager();
    registry_->AddInterface(
        base::Bind(&MediaDevicesDispatcherHost::Create, GetProcess()->GetID(),
                   GetRoutingID(),
                   base::Unretained(media_stream_manager)),
        BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));

    registry_->AddInterface(
        base::BindRepeating(
            &RenderFrameHostImpl::CreateMediaStreamDispatcherHost,
            base::Unretained(this), base::Unretained(media_stream_manager)),
        BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));
  }
#endif

#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
  registry_->AddInterface(base::Bind(&RemoterFactoryImpl::Bind,
                                     GetProcess()->GetID(), GetRoutingID()));
#endif  // BUILDFLAG(ENABLE_MEDIA_REMOTING)

  registry_->AddInterface(base::BindRepeating(
      &KeyboardLockServiceImpl::CreateMojoService, base::Unretained(this)));

  registry_->AddInterface(base::Bind(&ImageCaptureImpl::Create));

#if !defined(OS_ANDROID)
  if (base::FeatureList::IsEnabled(features::kWebAuth)) {
    registry_->AddInterface(
        base::Bind(&RenderFrameHostImpl::BindAuthenticatorRequest,
                   base::Unretained(this)));
    if (base::CommandLine::ForCurrentProcess()->HasSwitch(
            switches::kEnableWebAuthTestingAPI)) {
      auto* environment_singleton =
          ScopedVirtualAuthenticatorEnvironment::GetInstance();
      registry_->AddInterface(base::BindRepeating(
          &ScopedVirtualAuthenticatorEnvironment::AddBinding,
          base::Unretained(environment_singleton)));
    }
  }
#endif  // !defined(OS_ANDROID)

  if (permission_manager) {
    sensor_provider_proxy_.reset(
        new SensorProviderProxyImpl(permission_manager, this));
    registry_->AddInterface(
        base::Bind(&SensorProviderProxyImpl::Bind,
                   base::Unretained(sensor_provider_proxy_.get())));
  }

  registry_->AddInterface(base::BindRepeating(
      &media::MediaMetricsProvider::Create,
      // Only save decode stats when on-the-record.
      GetSiteInstance()->GetBrowserContext()->IsOffTheRecord()
          ? nullptr
          : GetSiteInstance()
                ->GetBrowserContext()
                ->GetVideoDecodePerfHistory()));

  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          cc::switches::kEnableGpuBenchmarking)) {
    registry_->AddInterface(
        base::Bind(&InputInjectorImpl::Create, weak_ptr_factory_.GetWeakPtr()));
  }

  registry_->AddInterface(
      base::BindRepeating(GetRestrictedCookieManager, base::Unretained(this)));

  // TODO(crbug.com/775792): Move to RendererInterfaceBinders.
  registry_->AddInterface(base::BindRepeating(
      &QuotaDispatcherHost::CreateForFrame, GetProcess(), routing_id_));

  registry_->AddInterface(
      base::BindRepeating(
          SpeechRecognitionDispatcherHost::Create, GetProcess()->GetID(),
          routing_id_,
          base::WrapRefCounted(
              GetProcess()->GetStoragePartition()->GetURLRequestContext())),
      BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));

  if (base::FeatureList::IsEnabled(network::features::kNetworkService)) {
    StoragePartitionImpl* storage_partition =
        static_cast<StoragePartitionImpl*>(BrowserContext::GetStoragePartition(
            GetSiteInstance()->GetBrowserContext(), GetSiteInstance()));
    // TODO(https://crbug.com/813479): Investigate why we need to explicitly
    // specify task runner for BrowserThread::IO here.
    // Bind calls to the BindRegistry should come on to the IO thread by
    // default, but it looks we need this in browser tests (but not in full
    // chrome build), i.e. in content/browser/loader/prefetch_browsertest.cc.
    registry_->AddInterface(
        base::BindRepeating(
            &PrefetchURLLoaderService::ConnectToService,
            base::RetainedRef(storage_partition->GetPrefetchURLLoaderService()),
            frame_tree_node_->frame_tree_node_id()),
        BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));
  }
}

void RenderFrameHostImpl::ResetWaitingState() {
  DCHECK(is_active());

  // Whenever we reset the RFH state, we should not be waiting for beforeunload
  // or close acks.  We clear them here to be safe, since they can cause
  // navigations to be ignored in DidCommitProvisionalLoad.
  if (is_waiting_for_beforeunload_ack_) {
    is_waiting_for_beforeunload_ack_ = false;
    if (beforeunload_timeout_)
      beforeunload_timeout_->Stop();
  }
  send_before_unload_start_time_ = base::TimeTicks();
  render_view_host_->is_waiting_for_close_ack_ = false;
  network_service_connection_error_handler_holder_.reset();
}

bool RenderFrameHostImpl::CanCommitOrigin(
    const url::Origin& origin,
    const GURL& url) {
  // If the --disable-web-security flag is specified, all bets are off and the
  // renderer process can send any origin it wishes.
  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
      switches::kDisableWebSecurity)) {
    return true;
  }

  // file: URLs can be allowed to access any other origin, based on settings.
  if (origin.scheme() == url::kFileScheme) {
    WebPreferences prefs = render_view_host_->GetWebkitPreferences();
    if (prefs.allow_universal_access_from_file_urls)
      return true;
  }

  // It is safe to commit into a unique origin, regardless of the URL, as it is
  // restricted from accessing other origins.
  if (origin.unique())
    return true;

  // Standard URLs must match the reported origin.
  if (url.IsStandard() && !origin.IsSameOriginWith(url::Origin::Create(url)))
    return false;

  // A non-unique origin must be a valid URL, which allows us to safely do a
  // conversion to GURL.
  GURL origin_url = origin.GetURL();

  // Verify that the origin is allowed to commit in this process.
  // Note: This also handles non-standard cases for |url|, such as
  // about:blank, data, and blob URLs.
  return CanCommitURL(origin_url);
}

void RenderFrameHostImpl::NavigateToInterstitialURL(const GURL& data_url) {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::NavigateToInterstitialURL",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());
  DCHECK(data_url.SchemeIs(url::kDataScheme));
  CommonNavigationParams common_params(
      data_url, Referrer(), ui::PAGE_TRANSITION_LINK,
      FrameMsg_Navigate_Type::DIFFERENT_DOCUMENT, false, false,
      base::TimeTicks::Now(), FrameMsg_UILoadMetricsReportType::NO_REPORT,
      GURL(), GURL(), PREVIEWS_OFF, base::TimeTicks::Now(), "GET", nullptr,
      base::Optional<SourceLocation>(),
      CSPDisposition::CHECK /* should_check_main_world_csp */,
      false /* started_from_context_menu */, false /* has_user_gesture */,
      std::vector<ContentSecurityPolicy>() /* initiator_csp */,
      CSPSource() /* initiator_self_source */);
  CommitNavigation(nullptr, network::mojom::URLLoaderClientEndpointsPtr(),
                   common_params, RequestNavigationParams(), false,
                   base::nullopt, base::nullopt /* subresource_overrides */,
                   base::UnguessableToken::Create() /* not traced */);
}

void RenderFrameHostImpl::Stop() {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::Stop", "frame_tree_node",
               frame_tree_node_->frame_tree_node_id());
  Send(new FrameMsg_Stop(routing_id_));
}

void RenderFrameHostImpl::DispatchBeforeUnload(bool for_navigation,
                                               bool is_reload) {
  DCHECK(for_navigation || !is_reload);

  if (!for_navigation) {
    // Cancel any pending navigations, to avoid their navigation commit/fail
    // event from wiping out the is_waiting_for_beforeunload_ack_ state.
    if (frame_tree_node_->navigation_request() &&
        frame_tree_node_->navigation_request()->navigation_handle()) {
      frame_tree_node_->navigation_request()
          ->navigation_handle()
          ->set_net_error_code(net::ERR_ABORTED);
    }
    frame_tree_node_->ResetNavigationRequest(false, true);
  }

  // TODO(creis): Support beforeunload on subframes.  For now just pretend that
  // the handler ran and allowed the navigation to proceed.
  if (!ShouldDispatchBeforeUnload()) {
    DCHECK(!for_navigation);
    frame_tree_node_->render_manager()->OnBeforeUnloadACK(
        true, base::TimeTicks::Now());
    return;
  }
  TRACE_EVENT_ASYNC_BEGIN1("navigation", "RenderFrameHostImpl BeforeUnload",
                           this, "&RenderFrameHostImpl", (void*)this);

  // This may be called more than once (if the user clicks the tab close button
  // several times, or if they click the tab close button then the browser close
  // button), and we only send the message once.
  if (is_waiting_for_beforeunload_ack_) {
    // Some of our close messages could be for the tab, others for cross-site
    // transitions. We always want to think it's for closing the tab if any
    // of the messages were, since otherwise it might be impossible to close
    // (if there was a cross-site "close" request pending when the user clicked
    // the close button). We want to keep the "for cross site" flag only if
    // both the old and the new ones are also for cross site.
    unload_ack_is_for_navigation_ =
        unload_ack_is_for_navigation_ && for_navigation;
  } else {
    // Start the hang monitor in case the renderer hangs in the beforeunload
    // handler.
    is_waiting_for_beforeunload_ack_ = true;
    unload_ack_is_for_navigation_ = for_navigation;
    send_before_unload_start_time_ = base::TimeTicks::Now();
    if (render_view_host_->GetDelegate()->IsJavaScriptDialogShowing()) {
      // If there is a JavaScript dialog up, don't bother sending the renderer
      // the unload event because it is known unresponsive, waiting for the
      // reply from the dialog.
      SimulateBeforeUnloadAck();
    } else {
      if (beforeunload_timeout_) {
        beforeunload_timeout_->Start(
            TimeDelta::FromMilliseconds(RenderViewHostImpl::kUnloadTimeoutMS));
      }
      Send(new FrameMsg_BeforeUnload(routing_id_, is_reload));
    }
  }
}

void RenderFrameHostImpl::SimulateBeforeUnloadAck() {
  DCHECK(is_waiting_for_beforeunload_ack_);
  base::TimeTicks approx_renderer_start_time = send_before_unload_start_time_;
  OnBeforeUnloadACK(true, approx_renderer_start_time, base::TimeTicks::Now());
}

bool RenderFrameHostImpl::ShouldDispatchBeforeUnload() {
  return IsRenderFrameLive();
}

void RenderFrameHostImpl::UpdateOpener() {
  TRACE_EVENT1("navigation", "RenderFrameHostImpl::UpdateOpener",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id());

  // This frame (the frame whose opener is being updated) might not have had
  // proxies for the new opener chain in its SiteInstance.  Make sure they
  // exist.
  if (frame_tree_node_->opener()) {
    frame_tree_node_->opener()->render_manager()->CreateOpenerProxies(
        GetSiteInstance(), frame_tree_node_);
  }

  int opener_routing_id =
      frame_tree_node_->render_manager()->GetOpenerRoutingID(GetSiteInstance());
  Send(new FrameMsg_UpdateOpener(GetRoutingID(), opener_routing_id));
}

void RenderFrameHostImpl::SetFocusedFrame() {
  Send(new FrameMsg_SetFocusedFrame(routing_id_));
}

void RenderFrameHostImpl::AdvanceFocus(blink::WebFocusType type,
                                       RenderFrameProxyHost* source_proxy) {
  DCHECK(!source_proxy ||
         (source_proxy->GetProcess()->GetID() == GetProcess()->GetID()));
  int32_t source_proxy_routing_id = MSG_ROUTING_NONE;
  if (source_proxy)
    source_proxy_routing_id = source_proxy->GetRoutingID();
  Send(
      new FrameMsg_AdvanceFocus(GetRoutingID(), type, source_proxy_routing_id));
}

void RenderFrameHostImpl::JavaScriptDialogClosed(
    IPC::Message* reply_msg,
    bool success,
    const base::string16& user_input) {
  GetProcess()->SetIgnoreInputEvents(false);

  SendJavaScriptDialogReply(reply_msg, success, user_input);

  // If executing as part of beforeunload event handling, there may have been
  // timers stopped in this frame or a frame up in the frame hierarchy. Restart
  // any timers that were stopped in OnRunBeforeUnloadConfirm().
  for (RenderFrameHostImpl* frame = this; frame; frame = frame->GetParent()) {
    if (frame->is_waiting_for_beforeunload_ack_ &&
        frame->beforeunload_timeout_) {
      frame->beforeunload_timeout_->Start(
          TimeDelta::FromMilliseconds(RenderViewHostImpl::kUnloadTimeoutMS));
    }
  }
}

void RenderFrameHostImpl::SendJavaScriptDialogReply(
    IPC::Message* reply_msg,
    bool success,
    const base::string16& user_input) {
  FrameHostMsg_RunJavaScriptDialog::WriteReplyParams(reply_msg, success,
                                                     user_input);
  Send(reply_msg);
}

void RenderFrameHostImpl::CommitNavigation(
    network::ResourceResponse* response,
    network::mojom::URLLoaderClientEndpointsPtr url_loader_client_endpoints,
    const CommonNavigationParams& common_params,
    const RequestNavigationParams& request_params,
    bool is_view_source,
    base::Optional<SubresourceLoaderParams> subresource_loader_params,
    base::Optional<std::vector<mojom::TransferrableURLLoaderPtr>>
        subresource_overrides,
    const base::UnguessableToken& devtools_navigation_token) {
  TRACE_EVENT2("navigation", "RenderFrameHostImpl::CommitNavigation",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(), "url",
               common_params.url.possibly_invalid_spec());
  DCHECK(!IsRendererDebugURL(common_params.url));
  DCHECK(
      (response && url_loader_client_endpoints) ||
      common_params.url.SchemeIs(url::kDataScheme) ||
      FrameMsg_Navigate_Type::IsSameDocument(common_params.navigation_type) ||
      !IsURLHandledByNetworkStack(common_params.url));

  const bool is_first_navigation = !has_committed_any_navigation_;
  has_committed_any_navigation_ = true;

  UpdatePermissionsForNavigation(common_params, request_params);

  // Get back to a clean state, in case we start a new navigation without
  // completing an unload handler.
  ResetWaitingState();

  // The renderer can exit view source mode when any error or cancellation
  // happen. When reusing the same renderer, overwrite to recover the mode.
  if (is_view_source && IsCurrent()) {
    DCHECK(!GetParent());
    render_view_host()->Send(new FrameMsg_EnableViewSourceMode(routing_id_));
  }

  const network::ResourceResponseHead head =
      response ? response->head : network::ResourceResponseHead();
  const bool is_same_document =
      FrameMsg_Navigate_Type::IsSameDocument(common_params.navigation_type);

  std::unique_ptr<URLLoaderFactoryBundleInfo> subresource_loader_factories;
  if (base::FeatureList::IsEnabled(network::features::kNetworkService) &&
      (!is_same_document || is_first_navigation)) {
    subresource_loader_factories =
        std::make_unique<URLLoaderFactoryBundleInfo>();
    // NOTE: On Network Service navigations, we want to ensure that a frame is
    // given everything it will need to load any accessible subresources. We
    // however only do this for cross-document navigations, because the
    // alternative would be redundant effort.
    network::mojom::URLLoaderFactoryPtrInfo default_factory_info;
    StoragePartitionImpl* storage_partition =
        static_cast<StoragePartitionImpl*>(BrowserContext::GetStoragePartition(
            GetSiteInstance()->GetBrowserContext(), GetSiteInstance()));
    if (subresource_loader_params &&
        subresource_loader_params->loader_factory_info.is_valid()) {
      // If the caller has supplied a default URLLoaderFactory override (for
      // e.g. appcache, Service Worker, etc.), use that.
      default_factory_info =
          std::move(subresource_loader_params->loader_factory_info);
    } else {
      std::string scheme = common_params.url.scheme();
      const auto& schemes = URLDataManagerBackend::GetWebUISchemes();
      if (std::find(schemes.begin(), schemes.end(), scheme) != schemes.end()) {
        network::mojom::URLLoaderFactoryPtr factory_for_webui =
            CreateWebUIURLLoaderBinding(this, scheme);
        if (enabled_bindings_ & BINDINGS_POLICY_WEB_UI) {
          // If the renderer has webui bindings, then don't give it access to
          // network loader for security reasons.
          default_factory_info = factory_for_webui.PassInterface();
        } else {
          // This is a webui scheme that doesn't have webui bindings. Give it
          // access to the network loader as it might require it.
          subresource_loader_factories->factories_info().emplace(
              scheme, factory_for_webui.PassInterface());
        }
      }
    }

    if (!default_factory_info) {
      // Otherwise default to a Network Service-backed loader from the
      // appropriate NetworkContext.
      CreateNetworkServiceDefaultFactoryAndObserve(
          mojo::MakeRequest(&default_factory_info));
    }

    DCHECK(default_factory_info);
    subresource_loader_factories->default_factory_info() =
        std::move(default_factory_info);
    // Everyone gets a blob loader.
    network::mojom::URLLoaderFactoryPtrInfo blob_factory_info;
    storage_partition->GetBlobURLLoaderFactory()->HandleRequest(
        mojo::MakeRequest(&blob_factory_info));
    subresource_loader_factories->factories_info().emplace(
        url::kBlobScheme, std::move(blob_factory_info));

    non_network_url_loader_factories_.clear();

    if (common_params.url.SchemeIsFile()) {
      // Only file resources can load file subresources
      auto file_factory = std::make_unique<FileURLLoaderFactory>(
          GetProcess()->GetBrowserContext()->GetPath(),
          base::CreateSequencedTaskRunnerWithTraits(
              {base::MayBlock(), base::TaskPriority::BACKGROUND,
               base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN}));
      non_network_url_loader_factories_.emplace(url::kFileScheme,
                                                std::move(file_factory));
    }

    GetContentClient()
        ->browser()
        ->RegisterNonNetworkSubresourceURLLoaderFactories(
            process_->GetID(), routing_id_, &non_network_url_loader_factories_);

    for (auto& factory : non_network_url_loader_factories_) {
      network::mojom::URLLoaderFactoryPtrInfo factory_proxy_info;
      auto factory_request = mojo::MakeRequest(&factory_proxy_info);
      GetContentClient()->browser()->WillCreateURLLoaderFactory(
          this, false /* is_navigation */, &factory_request);
      // Keep DevTools proxy lasy, i.e. closest to the network.
      RenderFrameDevToolsAgentHost::WillCreateURLLoaderFactory(
          this, false /* is_navigation */, false /* is_download */,
          &factory_request);
      factory.second->Clone(std::move(factory_request));
      subresource_loader_factories->factories_info().emplace(
          factory.first, std::move(factory_proxy_info));
    }
  }

  // It is imperative that cross-document navigations always provide a set of
  // subresource ULFs when the Network Service is enabled.
  DCHECK(!base::FeatureList::IsEnabled(network::features::kNetworkService) ||
         is_same_document || !is_first_navigation ||
         subresource_loader_factories);

  if (is_same_document) {
    DCHECK(same_document_navigation_request_);
    GetNavigationControl()->CommitSameDocumentNavigation(
        common_params, request_params,
        base::BindOnce(&RenderFrameHostImpl::OnSameDocumentCommitProcessed,
                       base::Unretained(this),
                       same_document_navigation_request_->navigation_handle()
                           ->GetNavigationId(),
                       common_params.should_replace_current_entry));
  } else {
    // Pass the controller service worker info if we have one.
    mojom::ControllerServiceWorkerInfoPtr controller;
    blink::mojom::ServiceWorkerObjectAssociatedPtrInfo remote_object;
    blink::mojom::ServiceWorkerState sent_state;
    if (subresource_loader_params &&
        subresource_loader_params->controller_service_worker_info) {
      controller =
          std::move(subresource_loader_params->controller_service_worker_info);
      if (controller->object_info) {
        controller->object_info->request = mojo::MakeRequest(&remote_object);
        sent_state = controller->object_info->state;
      }
    }

    GetNavigationControl()->CommitNavigation(
        head, common_params, request_params,
        std::move(url_loader_client_endpoints),
        std::move(subresource_loader_factories),
        std::move(subresource_overrides), std::move(controller),
        devtools_navigation_token);

    // |remote_object| is an associated interface ptr, so calls can't be made on
    // it until its request endpoint is sent. Now that the request endpoint was
    // sent, it can be used, so add it to ServiceWorkerHandle.
    if (remote_object.is_valid()) {
      BrowserThread::PostTask(
          BrowserThread::IO, FROM_HERE,
          base::BindOnce(
              &ServiceWorkerHandle::AddRemoteObjectPtrAndUpdateState,
              subresource_loader_params->controller_service_worker_handle,
              std::move(remote_object), sent_state));
    }

    // If a network request was made, update the Previews state.
    if (IsURLHandledByNetworkStack(common_params.url))
      last_navigation_previews_state_ = common_params.previews_state;
  }

  pending_commit_ = true;
  is_loading_ = true;
}

void RenderFrameHostImpl::FailedNavigation(
    const CommonNavigationParams& common_params,
    const RequestNavigationParams& request_params,
    bool has_stale_copy_in_cache,
    int error_code,
    const base::Optional<std::string>& error_page_content) {
  TRACE_EVENT2("navigation", "RenderFrameHostImpl::FailedNavigation",
               "frame_tree_node", frame_tree_node_->frame_tree_node_id(),
               "error", error_code);

  // Update renderer permissions even for failed commits, so that for example
  // the URL bar correctly displays privileged URLs instead of filtering them.
  UpdatePermissionsForNavigation(common_params, request_params);

  // Get back to a clean state, in case a new navigation started without
  // completing an unload handler.
  ResetWaitingState();

  std::unique_ptr<URLLoaderFactoryBundleInfo> subresource_loader_factories;
  if (base::FeatureList::IsEnabled(network::features::kNetworkService)) {
    network::mojom::URLLoaderFactoryPtrInfo default_factory_info;
    CreateNetworkServiceDefaultFactoryAndObserve(
        mojo::MakeRequest(&default_factory_info));
    subresource_loader_factories = std::make_unique<URLLoaderFactoryBundleInfo>(
        std::move(default_factory_info),
        std::map<std::string, network::mojom::URLLoaderFactoryPtrInfo>());
  }

  GetNavigationControl()->CommitFailedNavigation(
      common_params, request_params, has_stale_copy_in_cache, error_code,
      error_page_content, std::move(subresource_loader_factories));

  // An error page is expected to commit, hence why is_loading_ is set to true.
  is_loading_ = true;
  DCHECK(GetNavigationHandle() &&
         GetNavigationHandle()->GetNetErrorCode() != net::OK);
}

void RenderFrameHostImpl::HandleRendererDebugURL(const GURL& url) {
  DCHECK(IsRendererDebugURL(url));

  // Several tests expect a load of Chrome Debug URLs to send a DidStopLoading
  // notification, so set is loading to true here to properly surface it when
  // the renderer process is done handling the URL.
  // TODO(clamy): Remove the test dependency on this behavior.
  if (!url.SchemeIs(url::kJavaScriptScheme)) {
    bool was_loading = frame_tree_node()->frame_tree()->IsLoading();
    is_loading_ = true;
    frame_tree_node()->DidStartLoading(true, was_loading);
  }

  GetNavigationControl()->HandleRendererDebugURL(url);
}

void RenderFrameHostImpl::SetUpMojoIfNeeded() {
  if (registry_.get())
    return;

  associated_registry_ = std::make_unique<AssociatedInterfaceRegistryImpl>();
  registry_ = std::make_unique<service_manager::BinderRegistry>();

  auto make_binding = [](RenderFrameHostImpl* impl,
                         mojom::FrameHostAssociatedRequest request) {
    impl->frame_host_associated_binding_.Bind(std::move(request));
  };
  static_cast<blink::AssociatedInterfaceRegistry*>(associated_registry_.get())
      ->AddInterface(base::Bind(make_binding, base::Unretained(this)));

  RegisterMojoInterfaces();
  mojom::FrameFactoryPtr frame_factory;
  BindInterface(GetProcess(), &frame_factory);
  frame_factory->CreateFrame(routing_id_, MakeRequest(&frame_));

  service_manager::mojom::InterfaceProviderPtr remote_interfaces;
  frame_->GetInterfaceProvider(mojo::MakeRequest(&remote_interfaces));
  remote_interfaces_.reset(new service_manager::InterfaceProvider);
  remote_interfaces_->Bind(std::move(remote_interfaces));

  remote_interfaces_->GetInterface(&frame_input_handler_);
}

void RenderFrameHostImpl::InvalidateMojoConnection() {
  registry_.reset();

  frame_.reset();
  frame_bindings_control_.reset();
  frame_host_associated_binding_.Close();
  navigation_control_.reset();

  // Disconnect with ImageDownloader Mojo service in RenderFrame.
  mojo_image_downloader_.reset();

  frame_resource_coordinator_.reset();

  // The geolocation service and sensor provider proxy may attempt to cancel
  // permission requests so they must be reset before the routing_id mapping is
  // removed.
  geolocation_service_.reset();
  sensor_provider_proxy_.reset();
}

bool RenderFrameHostImpl::IsFocused() {
  return GetRenderWidgetHost()->is_focused() &&
         frame_tree_->GetFocusedFrame() &&
         (frame_tree_->GetFocusedFrame() == frame_tree_node() ||
          frame_tree_->GetFocusedFrame()->IsDescendantOf(frame_tree_node()));
}

bool RenderFrameHostImpl::UpdatePendingWebUI(const GURL& dest_url,
                                             int entry_bindings) {
  WebUI::TypeID new_web_ui_type =
      WebUIControllerFactoryRegistry::GetInstance()->GetWebUIType(
          GetSiteInstance()->GetBrowserContext(), dest_url);

  // If the required WebUI matches the pending WebUI or if it matches the
  // to-be-reused active WebUI, then leave everything as is.
  if (new_web_ui_type == pending_web_ui_type_ ||
      (should_reuse_web_ui_ && new_web_ui_type == web_ui_type_)) {
    return false;
  }

  // Reset the pending WebUI as from this point it will certainly not be reused.
  ClearPendingWebUI();

  // If this navigation is not to a WebUI, skip directly to bindings work.
  if (new_web_ui_type != WebUI::kNoWebUI) {
    if (new_web_ui_type == web_ui_type_) {
      // The active WebUI should be reused when dest_url requires a WebUI and
      // its type matches the current.
      DCHECK(web_ui_);
      should_reuse_web_ui_ = true;
    } else {
      // Otherwise create a new pending WebUI.
      pending_web_ui_ = delegate_->CreateWebUIForRenderFrameHost(dest_url);
      DCHECK(pending_web_ui_);
      pending_web_ui_type_ = new_web_ui_type;

      // If we have assigned (zero or more) bindings to the NavigationEntry in
      // the past, make sure we're not granting it different bindings than it
      // had before. If so, note it and don't give it any bindings, to avoid a
      // potential privilege escalation.
      if (entry_bindings != NavigationEntryImpl::kInvalidBindings &&
          pending_web_ui_->GetBindings() != entry_bindings) {
        RecordAction(
            base::UserMetricsAction("ProcessSwapBindingsMismatch_RVHM"));
        ClearPendingWebUI();
      }
    }
  }
  DCHECK_EQ(!pending_web_ui_, pending_web_ui_type_ == WebUI::kNoWebUI);

  // Either grant or check the RenderViewHost with/for proper bindings.
  if (pending_web_ui_ && !render_view_host_->GetProcess()->IsForGuestsOnly()) {
    // If a WebUI was created for the URL and the RenderView is not in a guest
    // process, then enable missing bindings.
    int new_bindings = pending_web_ui_->GetBindings();
    if ((GetEnabledBindings() & new_bindings) != new_bindings) {
      AllowBindings(new_bindings);
    }
  } else if (render_view_host_->is_active()) {
    // If the ongoing navigation is not to a WebUI or the RenderView is in a
    // guest process, ensure that we don't create an unprivileged RenderView in
    // a WebUI-enabled process unless it's swapped out.
    bool url_acceptable_for_webui =
        WebUIControllerFactoryRegistry::GetInstance()->IsURLAcceptableForWebUI(
            GetSiteInstance()->GetBrowserContext(), dest_url);
    if (!url_acceptable_for_webui) {
      CHECK(!ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
          GetProcess()->GetID()));
    }
  }
  return true;
}

void RenderFrameHostImpl::CommitPendingWebUI() {
  if (should_reuse_web_ui_) {
    should_reuse_web_ui_ = false;
  } else {
    web_ui_ = std::move(pending_web_ui_);
    web_ui_type_ = pending_web_ui_type_;
    pending_web_ui_type_ = WebUI::kNoWebUI;
  }
  DCHECK(!pending_web_ui_ && pending_web_ui_type_ == WebUI::kNoWebUI &&
         !should_reuse_web_ui_);
}

void RenderFrameHostImpl::ClearPendingWebUI() {
  pending_web_ui_.reset();
  pending_web_ui_type_ = WebUI::kNoWebUI;
  should_reuse_web_ui_ = false;
}

void RenderFrameHostImpl::ClearAllWebUI() {
  ClearPendingWebUI();
  web_ui_type_ = WebUI::kNoWebUI;
  web_ui_.reset();
}

const content::mojom::ImageDownloaderPtr&
RenderFrameHostImpl::GetMojoImageDownloader() {
  if (!mojo_image_downloader_.get() && GetRemoteInterfaces())
    GetRemoteInterfaces()->GetInterface(&mojo_image_downloader_);
  return mojo_image_downloader_;
}

const blink::mojom::FindInPageAssociatedPtr&
RenderFrameHostImpl::GetFindInPage() {
  if (!find_in_page_)
    GetRemoteAssociatedInterfaces()->GetInterface(&find_in_page_);
  return find_in_page_;
}

resource_coordinator::FrameResourceCoordinator*
RenderFrameHostImpl::GetFrameResourceCoordinator() {
  if (frame_resource_coordinator_)
    return frame_resource_coordinator_.get();

  if (!resource_coordinator::IsResourceCoordinatorEnabled()) {
    frame_resource_coordinator_ =
        std::make_unique<resource_coordinator::FrameResourceCoordinator>(
            nullptr);
  } else {
    auto* connection = ServiceManagerConnection::GetForProcess();
    frame_resource_coordinator_ =
        std::make_unique<resource_coordinator::FrameResourceCoordinator>(
            connection ? connection->GetConnector() : nullptr);
  }
  if (parent_) {
    parent_->GetFrameResourceCoordinator()->AddChildFrame(
        *frame_resource_coordinator_);
  }
  return frame_resource_coordinator_.get();
}

void RenderFrameHostImpl::ResetLoadingState() {
  if (is_loading()) {
    // When pending deletion, just set the loading state to not loading.
    // Otherwise, OnDidStopLoading will take care of that, as well as sending
    // notification to the FrameTreeNode about the change in loading state.
    if (!is_active())
      is_loading_ = false;
    else
      OnDidStopLoading();
  }
}

void RenderFrameHostImpl::SuppressFurtherDialogs() {
  Send(new FrameMsg_SuppressFurtherDialogs(GetRoutingID()));
}

void RenderFrameHostImpl::ClearFocusedElement() {
  has_focused_editable_element_ = false;
  Send(new FrameMsg_ClearFocusedElement(GetRoutingID()));
}

bool RenderFrameHostImpl::CanCommitURL(const GURL& url) {
  // Renderer-debug URLs can never be committed.
  if (IsRendererDebugURL(url))
    return false;

  // TODO(creis): We should also check for WebUI pages here.  Also, when the
  // out-of-process iframes implementation is ready, we should check for
  // cross-site URLs that are not allowed to commit in this process.

  // Give the client a chance to disallow URLs from committing.
  return GetContentClient()->browser()->CanCommitURL(GetProcess(), url);
}

void RenderFrameHostImpl::BlockRequestsForFrame() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  NotifyForEachFrameFromUI(
      this,
      base::BindRepeating(&ResourceDispatcherHostImpl::BlockRequestsForRoute));
}

void RenderFrameHostImpl::ResumeBlockedRequestsForFrame() {
  NotifyForEachFrameFromUI(
      this, base::BindRepeating(
                &ResourceDispatcherHostImpl::ResumeBlockedRequestsForRoute));
}

void RenderFrameHostImpl::CancelBlockedRequestsForFrame() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  NotifyForEachFrameFromUI(
      this, base::BindRepeating(
                &ResourceDispatcherHostImpl::CancelBlockedRequestsForRoute));
}

bool RenderFrameHostImpl::IsSameSiteInstance(
    RenderFrameHostImpl* other_render_frame_host) {
  // As a sanity check, make sure the frame belongs to the same BrowserContext.
  CHECK_EQ(GetSiteInstance()->GetBrowserContext(),
           other_render_frame_host->GetSiteInstance()->GetBrowserContext());
  return GetSiteInstance() == other_render_frame_host->GetSiteInstance();
}

void RenderFrameHostImpl::UpdateAccessibilityMode() {
  Send(new FrameMsg_SetAccessibilityMode(routing_id_,
                                         delegate_->GetAccessibilityMode()));
}

void RenderFrameHostImpl::RequestAXTreeSnapshot(AXTreeSnapshotCallback callback,
                                                ui::AXMode ax_mode) {
  static int next_id = 1;
  int callback_id = next_id++;
  Send(new AccessibilityMsg_SnapshotTree(routing_id_, callback_id,
                                         ax_mode.mode()));
  ax_tree_snapshot_callbacks_.insert(
      std::make_pair(callback_id, std::move(callback)));
}

void RenderFrameHostImpl::SetAccessibilityCallbackForTesting(
    const base::Callback<void(RenderFrameHostImpl*, ax::mojom::Event, int)>&
        callback) {
  accessibility_testing_callback_ = callback;
}

void RenderFrameHostImpl::UpdateAXTreeData() {
  ui::AXMode accessibility_mode = delegate_->GetAccessibilityMode();
  if (accessibility_mode.is_mode_off() || !is_active()) {
    return;
  }

  std::vector<AXEventNotificationDetails> details;
  details.reserve(1U);
  AXEventNotificationDetails detail;
  detail.ax_tree_id = GetAXTreeID();
  detail.update.has_tree_data = true;
  AXContentTreeDataToAXTreeData(&detail.update.tree_data);
  details.push_back(detail);

  if (browser_accessibility_manager_)
    browser_accessibility_manager_->OnAccessibilityEvents(details);

  delegate_->AccessibilityEventReceived(details);
}

void RenderFrameHostImpl::SetTextTrackSettings(
    const FrameMsg_TextTrackSettings_Params& params) {
  DCHECK(!GetParent());
  Send(new FrameMsg_SetTextTrackSettings(routing_id_, params));
}

const ui::AXTree* RenderFrameHostImpl::GetAXTreeForTesting() {
  return ax_tree_for_testing_.get();
}

BrowserAccessibilityManager*
    RenderFrameHostImpl::GetOrCreateBrowserAccessibilityManager() {
  RenderWidgetHostViewBase* view = GetViewForAccessibility();
  if (view &&
      !browser_accessibility_manager_ &&
      !no_create_browser_accessibility_manager_for_testing_) {
    bool is_root_frame = !frame_tree_node()->parent();
    browser_accessibility_manager_.reset(
        view->CreateBrowserAccessibilityManager(this, is_root_frame));
  }
  return browser_accessibility_manager_.get();
}

void RenderFrameHostImpl::ActivateFindInPageResultForAccessibility(
    int request_id) {
  ui::AXMode accessibility_mode = delegate_->GetAccessibilityMode();
  if (accessibility_mode.has_mode(ui::AXMode::kNativeAPIs)) {
    BrowserAccessibilityManager* manager =
        GetOrCreateBrowserAccessibilityManager();
    if (manager)
      manager->ActivateFindInPageResult(request_id);
  }
}

void RenderFrameHostImpl::InsertVisualStateCallback(
    const VisualStateCallback& callback) {
  static uint64_t next_id = 1;
  uint64_t key = next_id++;
  Send(new FrameMsg_VisualStateRequest(routing_id_, key));
  visual_state_callbacks_.insert(std::make_pair(key, callback));
}

bool RenderFrameHostImpl::IsRenderFrameLive() {
  bool is_live = GetProcess()->HasConnection() && render_frame_created_;

  // Sanity check: the RenderView should always be live if the RenderFrame is.
  DCHECK(!is_live || render_view_host_->IsRenderViewLive());

  return is_live;
}

bool RenderFrameHostImpl::IsCurrent() {
  return this == frame_tree_node_->current_frame_host();
}

int RenderFrameHostImpl::GetProxyCount() {
  if (!IsCurrent())
    return 0;
  return frame_tree_node_->render_manager()->GetProxyCount();
}

void RenderFrameHostImpl::FilesSelectedInChooser(
    const std::vector<content::FileChooserFileInfo>& files,
    FileChooserParams::Mode permissions) {
  storage::FileSystemContext* const file_system_context =
      BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
                                          GetSiteInstance())
          ->GetFileSystemContext();
  // Grant the security access requested to the given files.
  for (const auto& file : files) {
    if (permissions == FileChooserParams::Save) {
      ChildProcessSecurityPolicyImpl::GetInstance()->GrantCreateReadWriteFile(
          GetProcess()->GetID(), file.file_path);
    } else {
      ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
          GetProcess()->GetID(), file.file_path);
    }
    if (file.file_system_url.is_valid()) {
      ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFileSystem(
          GetProcess()->GetID(),
          file_system_context->CrackURL(file.file_system_url)
              .mount_filesystem_id());
    }
  }

  Send(new FrameMsg_RunFileChooserResponse(routing_id_, files));
}

bool RenderFrameHostImpl::HasSelection() {
  return has_selection_;
}

#if BUILDFLAG(USE_EXTERNAL_POPUP_MENU)
#if defined(OS_MACOSX)

void RenderFrameHostImpl::DidSelectPopupMenuItem(int selected_index) {
  Send(new FrameMsg_SelectPopupMenuItem(routing_id_, selected_index));
}

void RenderFrameHostImpl::DidCancelPopupMenu() {
  Send(new FrameMsg_SelectPopupMenuItem(routing_id_, -1));
}

#else

void RenderFrameHostImpl::DidSelectPopupMenuItems(
    const std::vector<int>& selected_indices) {
  Send(new FrameMsg_SelectPopupMenuItems(routing_id_, false, selected_indices));
}

void RenderFrameHostImpl::DidCancelPopupMenu() {
  Send(new FrameMsg_SelectPopupMenuItems(
      routing_id_, true, std::vector<int>()));
}

#endif
#endif

bool RenderFrameHostImpl::CanAccessFilesOfPageState(const PageState& state) {
  return ChildProcessSecurityPolicyImpl::GetInstance()->CanReadAllFiles(
      GetProcess()->GetID(), state.GetReferencedFiles());
}

void RenderFrameHostImpl::GrantFileAccessFromPageState(const PageState& state) {
  GrantFileAccess(GetProcess()->GetID(), state.GetReferencedFiles());
}

void RenderFrameHostImpl::GrantFileAccessFromResourceRequestBody(
    const network::ResourceRequestBody& body) {
  GrantFileAccess(GetProcess()->GetID(), body.GetReferencedFiles());
}

void RenderFrameHostImpl::UpdatePermissionsForNavigation(
    const CommonNavigationParams& common_params,
    const RequestNavigationParams& request_params) {
  // Browser plugin guests are not allowed to navigate outside web-safe schemes,
  // so do not grant them the ability to request additional URLs.
  if (!GetProcess()->IsForGuestsOnly()) {
    ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
        GetProcess()->GetID(), common_params.url);
    if (common_params.url.SchemeIs(url::kDataScheme) &&
        !common_params.base_url_for_data_url.is_empty()) {
      // When there's a base URL specified for the data URL, we also need to
      // grant access to the base URL. This allows file: and other unexpected
      // schemes to be accepted at commit time and during CORS checks (e.g., for
      // font requests).
      ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
          GetProcess()->GetID(), common_params.base_url_for_data_url);
    }
  }

  // We may be returning to an existing NavigationEntry that had been granted
  // file access.  If this is a different process, we will need to grant the
  // access again.  Abuse is prevented, because the files listed in the page
  // state are validated earlier, when they are received from the renderer (in
  // RenderFrameHostImpl::CanAccessFilesOfPageState).
  if (request_params.page_state.IsValid())
    GrantFileAccessFromPageState(request_params.page_state);

  // We may be here after transferring navigation to a different renderer
  // process.  In this case, we need to ensure that the new renderer retains
  // ability to access files that the old renderer could access.  Abuse is
  // prevented, because the files listed in ResourceRequestBody are validated
  // earlier, when they are recieved from the renderer (in ShouldServiceRequest
  // called from ResourceDispatcherHostImpl::BeginRequest).
  if (common_params.post_data)
    GrantFileAccessFromResourceRequestBody(*common_params.post_data);
}

void RenderFrameHostImpl::UpdateSubresourceLoaderFactories() {
  DCHECK(base::FeatureList::IsEnabled(network::features::kNetworkService));
  // We only send loader factory bundle upon navigation, so
  // bail out if the frame hasn't commited any yet.
  if (!has_committed_any_navigation_)
    return;
  DCHECK(network_service_connection_error_handler_holder_.is_bound());

  network::mojom::URLLoaderFactoryPtrInfo default_factory_info;
  CreateNetworkServiceDefaultFactoryAndObserve(
      mojo::MakeRequest(&default_factory_info));

  std::unique_ptr<URLLoaderFactoryBundleInfo> subresource_loader_factories =
      std::make_unique<URLLoaderFactoryBundleInfo>();
  subresource_loader_factories->default_factory_info() =
      std::move(default_factory_info);
  GetNavigationControl()->UpdateSubresourceLoaderFactories(
      std::move(subresource_loader_factories));
}

void RenderFrameHostImpl::CreateNetworkServiceDefaultFactoryAndObserve(
    network::mojom::URLLoaderFactoryRequest default_factory_request) {
  auto* context = GetSiteInstance()->GetBrowserContext();
  GetContentClient()->browser()->WillCreateURLLoaderFactory(
      this, false /* is_navigation */, &default_factory_request);
  // Keep DevTools proxy lasy, i.e. closest to the network.
  RenderFrameDevToolsAgentHost::WillCreateURLLoaderFactory(
      this, false /* is_navigation */, false /* is_download */,
      &default_factory_request);
  StoragePartitionImpl* storage_partition = static_cast<StoragePartitionImpl*>(
      BrowserContext::GetStoragePartition(context, GetSiteInstance()));
  if (g_create_network_factory_callback_for_test.Get().is_null()) {
    storage_partition->GetNetworkContext()->CreateURLLoaderFactory(
        std::move(default_factory_request), GetProcess()->GetID());
  } else {
    network::mojom::URLLoaderFactoryPtr original_factory;
    storage_partition->GetNetworkContext()->CreateURLLoaderFactory(
        mojo::MakeRequest(&original_factory), GetProcess()->GetID());
    g_create_network_factory_callback_for_test.Get().Run(
        std::move(default_factory_request), GetProcess()->GetID(),
        original_factory.PassInterface());
  }

  // Add connection error observer when Network Service is running
  // out-of-process.
  if (IsOutOfProcessNetworkService()) {
    storage_partition->GetNetworkContext()->CreateURLLoaderFactory(
        mojo::MakeRequest(&network_service_connection_error_handler_holder_),
        GetProcess()->GetID());
    network_service_connection_error_handler_holder_
        .set_connection_error_handler(base::BindOnce(
            &RenderFrameHostImpl::UpdateSubresourceLoaderFactories,
            weak_ptr_factory_.GetWeakPtr()));
  }
}

bool RenderFrameHostImpl::CanExecuteJavaScript() {
#if defined(OS_ANDROID)
  if (g_allow_injecting_javascript)
    return true;
#endif
  return !frame_tree_node_->current_url().is_valid() ||
         frame_tree_node_->current_url().SchemeIs(kChromeDevToolsScheme) ||
         ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
             GetProcess()->GetID()) ||
         // It's possible to load about:blank in a Web UI renderer.
         // See http://crbug.com/42547
         (frame_tree_node_->current_url().spec() == url::kAboutBlankURL) ||
         // InterstitialPageImpl should be the only case matching this.
         (delegate_->GetAsWebContents() == nullptr);
}

// static
int RenderFrameHost::GetFrameTreeNodeIdForRoutingId(int process_id,
                                                    int routing_id) {
  RenderFrameHostImpl* rfh = nullptr;
  RenderFrameProxyHost* rfph = nullptr;
  LookupRenderFrameHostOrProxy(process_id, routing_id, &rfh, &rfph);
  if (rfh) {
    return rfh->GetFrameTreeNodeId();
  } else if (rfph) {
    return rfph->frame_tree_node()->frame_tree_node_id();
  }
  return kNoFrameTreeNodeId;
}

// static
RenderFrameHost* RenderFrameHost::FromPlaceholderId(
    int render_process_id,
    int placeholder_routing_id) {
  RenderFrameProxyHost* rfph =
      RenderFrameProxyHost::FromID(render_process_id, placeholder_routing_id);
  FrameTreeNode* node = rfph ? rfph->frame_tree_node() : nullptr;
  return node ? node->current_frame_host() : nullptr;
}

ui::AXTreeIDRegistry::AXTreeID RenderFrameHostImpl::RoutingIDToAXTreeID(
    int routing_id) {
  RenderFrameHostImpl* rfh = nullptr;
  RenderFrameProxyHost* rfph = nullptr;
  LookupRenderFrameHostOrProxy(GetProcess()->GetID(), routing_id, &rfh, &rfph);
  if (rfph) {
    rfh = rfph->frame_tree_node()->current_frame_host();
  }

  if (!rfh)
    return ui::AXTreeIDRegistry::kNoAXTreeID;

  return rfh->GetAXTreeID();
}

ui::AXTreeIDRegistry::AXTreeID
RenderFrameHostImpl::BrowserPluginInstanceIDToAXTreeID(int instance_id) {
  RenderFrameHostImpl* guest = static_cast<RenderFrameHostImpl*>(
      delegate()->GetGuestByInstanceID(this, instance_id));
  if (!guest)
    return ui::AXTreeIDRegistry::kNoAXTreeID;

  // Create a mapping from the guest to its embedder's AX Tree ID, and
  // explicitly update the guest to propagate that mapping immediately.
  guest->set_browser_plugin_embedder_ax_tree_id(GetAXTreeID());
  guest->UpdateAXTreeData();

  return guest->GetAXTreeID();
}

void RenderFrameHostImpl::AXContentNodeDataToAXNodeData(
    const AXContentNodeData& src,
    ui::AXNodeData* dst) {
  // Copy the common fields.
  *dst = src;

  // Map content-specific attributes based on routing IDs or browser plugin
  // instance IDs to generic attributes with global AXTreeIDs.
  for (auto iter : src.content_int_attributes) {
    AXContentIntAttribute attr = iter.first;
    int32_t value = iter.second;
    switch (attr) {
      case AX_CONTENT_ATTR_CHILD_ROUTING_ID:
        dst->int_attributes.push_back(std::make_pair(
            ax::mojom::IntAttribute::kChildTreeId, RoutingIDToAXTreeID(value)));
        break;
      case AX_CONTENT_ATTR_CHILD_BROWSER_PLUGIN_INSTANCE_ID:
        dst->int_attributes.push_back(
            std::make_pair(ax::mojom::IntAttribute::kChildTreeId,
                           BrowserPluginInstanceIDToAXTreeID(value)));
        break;
      case AX_CONTENT_INT_ATTRIBUTE_LAST:
        NOTREACHED();
        break;
    }
  }
}

void RenderFrameHostImpl::AXContentTreeDataToAXTreeData(
    ui::AXTreeData* dst) {
  const AXContentTreeData& src = ax_content_tree_data_;

  // Copy the common fields.
  *dst = src;

  if (src.routing_id != -1)
    dst->tree_id = RoutingIDToAXTreeID(src.routing_id);

  if (src.parent_routing_id != -1)
    dst->parent_tree_id = RoutingIDToAXTreeID(src.parent_routing_id);

  if (browser_plugin_embedder_ax_tree_id_ != ui::AXTreeIDRegistry::kNoAXTreeID)
    dst->parent_tree_id = browser_plugin_embedder_ax_tree_id_;

  // If this is not the root frame tree node, we're done.
  if (frame_tree_node()->parent())
    return;

  // For the root frame tree node, also store the AXTreeID of the focused frame.
  auto* focused_frame = static_cast<RenderFrameHostImpl*>(
      delegate_->GetFocusedFrameIncludingInnerWebContents());
  if (!focused_frame)
    return;
  dst->focused_tree_id = focused_frame->GetAXTreeID();
}

WebBluetoothServiceImpl* RenderFrameHostImpl::CreateWebBluetoothService(
    blink::mojom::WebBluetoothServiceRequest request) {
  // RFHI owns |web_bluetooth_services_| and |web_bluetooth_service| owns the
  // |binding_| which may run the error handler. |binding_| can't run the error
  // handler after it's destroyed so it can't run after the RFHI is destroyed.
  auto web_bluetooth_service =
      std::make_unique<WebBluetoothServiceImpl>(this, std::move(request));
  web_bluetooth_service->SetClientConnectionErrorHandler(
      base::BindOnce(&RenderFrameHostImpl::DeleteWebBluetoothService,
                     base::Unretained(this), web_bluetooth_service.get()));
  web_bluetooth_services_.push_back(std::move(web_bluetooth_service));
  return web_bluetooth_services_.back().get();
}

void RenderFrameHostImpl::DeleteWebBluetoothService(
    WebBluetoothServiceImpl* web_bluetooth_service) {
  auto it = std::find_if(
      web_bluetooth_services_.begin(), web_bluetooth_services_.end(),
      [web_bluetooth_service](
          const std::unique_ptr<WebBluetoothServiceImpl>& service) {
        return web_bluetooth_service == service.get();
      });
  DCHECK(it != web_bluetooth_services_.end());
  web_bluetooth_services_.erase(it);
}

void RenderFrameHostImpl::CreateUsbDeviceManager(
    device::mojom::UsbDeviceManagerRequest request) {
  GetContentClient()->browser()->CreateUsbDeviceManager(this,
                                                        std::move(request));
}

void RenderFrameHostImpl::CreateUsbChooserService(
    device::mojom::UsbChooserServiceRequest request) {
  GetContentClient()->browser()->CreateUsbChooserService(this,
                                                         std::move(request));
}

void RenderFrameHostImpl::ResetFeaturePolicy() {
  RenderFrameHostImpl* parent_frame_host = GetParent();
  const blink::FeaturePolicy* parent_policy =
      parent_frame_host ? parent_frame_host->feature_policy() : nullptr;
  blink::ParsedFeaturePolicy container_policy =
      frame_tree_node()->effective_frame_policy().container_policy;
  feature_policy_ = blink::FeaturePolicy::CreateFromParentPolicy(
      parent_policy, container_policy, last_committed_origin_);
}

void RenderFrameHostImpl::CreateAudioInputStreamFactory(
    mojom::RendererAudioInputStreamFactoryRequest request) {
  BrowserMainLoop* browser_main_loop = BrowserMainLoop::GetInstance();
  DCHECK(browser_main_loop);
  if (base::FeatureList::IsEnabled(features::kAudioServiceAudioStreams)) {
    scoped_refptr<AudioInputDeviceManager> aidm =
        browser_main_loop->media_stream_manager()->audio_input_device_manager();
    audio_service_audio_input_stream_factory_.emplace(std::move(request),
                                                      std::move(aidm), this);
  } else {
    in_content_audio_input_stream_factory_ =
        RenderFrameAudioInputStreamFactoryHandle::CreateFactory(
            base::BindRepeating(&AudioInputDelegateImpl::Create,
                                media::AudioManager::Get(),
                                AudioMirroringManager::GetInstance(),
                                browser_main_loop->user_input_monitor(),
                                GetProcess()->GetID(), GetRoutingID()),
            browser_main_loop->media_stream_manager(), GetProcess()->GetID(),
            GetRoutingID(), std::move(request));
  }
}

void RenderFrameHostImpl::CreateAudioOutputStreamFactory(
    mojom::RendererAudioOutputStreamFactoryRequest request) {
  if (base::FeatureList::IsEnabled(features::kAudioServiceAudioStreams)) {
    media::AudioSystem* audio_system =
        BrowserMainLoop::GetInstance()->audio_system();
    MediaStreamManager* media_stream_manager =
        BrowserMainLoop::GetInstance()->media_stream_manager();
    audio_service_audio_output_stream_factory_.emplace(
        this, audio_system, media_stream_manager, std::move(request));
  } else {
    RendererAudioOutputStreamFactoryContext* factory_context =
        GetProcess()->GetRendererAudioOutputStreamFactoryContext();
    DCHECK(factory_context);
    in_content_audio_output_stream_factory_ =
        RenderFrameAudioOutputStreamFactoryHandle::CreateFactory(
            factory_context, GetRoutingID(), std::move(request));
  }
}

#if BUILDFLAG(ENABLE_WEBRTC)
void RenderFrameHostImpl::CreateMediaStreamDispatcherHost(
    MediaStreamManager* media_stream_manager,
    mojom::MediaStreamDispatcherHostRequest request) {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  if (!media_stream_dispatcher_host_) {
    media_stream_dispatcher_host_.reset(new MediaStreamDispatcherHost(
        GetProcess()->GetID(), GetRoutingID(), media_stream_manager));
  }
  media_stream_dispatcher_host_->BindRequest(std::move(request));
}
#endif

void RenderFrameHostImpl::BindMediaInterfaceFactoryRequest(
    media::mojom::InterfaceFactoryRequest request) {
  DCHECK(!media_interface_proxy_);
  media_interface_proxy_.reset(new MediaInterfaceProxy(
      this, std::move(request),
      base::Bind(&RenderFrameHostImpl::OnMediaInterfaceFactoryConnectionError,
                 base::Unretained(this))));
}

void RenderFrameHostImpl::CreateWebSocket(
    network::mojom::WebSocketRequest request) {
  // This is to support usage of WebSockets in cases in which there is an
  // associated RenderFrame. This is important for showing the correct security
  // state of the page and also honoring user override of bad certificates.
  WebSocketManager::CreateWebSocket(process_->GetID(), routing_id_,
                                    last_committed_origin_, std::move(request));
}

void RenderFrameHostImpl::CreateDedicatedWorkerHostFactory(
    blink::mojom::DedicatedWorkerFactoryRequest request) {
  content::CreateDedicatedWorkerHostFactory(process_->GetID(), routing_id_,
                                            last_committed_origin_,
                                            std::move(request));
}

void RenderFrameHostImpl::OnMediaInterfaceFactoryConnectionError() {
  DCHECK(media_interface_proxy_);
  media_interface_proxy_.reset();
}

void RenderFrameHostImpl::BindWakeLockRequest(
    device::mojom::WakeLockRequest request) {
  device::mojom::WakeLock* renderer_wake_lock =
      delegate_ ? delegate_->GetRendererWakeLock() : nullptr;
  if (renderer_wake_lock)
    renderer_wake_lock->AddClient(std::move(request));
}

#if defined(OS_ANDROID)
void RenderFrameHostImpl::BindNFCRequest(device::mojom::NFCRequest request) {
  if (delegate_)
    delegate_->GetNFC(std::move(request));
}
#endif

void RenderFrameHostImpl::BindPresentationServiceRequest(
    blink::mojom::PresentationServiceRequest request) {
  if (!presentation_service_)
    presentation_service_ = PresentationServiceImpl::Create(this);

  presentation_service_->Bind(std::move(request));
}

#if !defined(OS_ANDROID)
void RenderFrameHostImpl::BindAuthenticatorRequest(
    webauth::mojom::AuthenticatorRequest request) {
  if (!authenticator_impl_)
    authenticator_impl_.reset(new AuthenticatorImpl(this));

  authenticator_impl_->Bind(std::move(request));
}
#endif

void RenderFrameHostImpl::GetInterface(
    const std::string& interface_name,
    mojo::ScopedMessagePipeHandle interface_pipe) {
  // Requests are serviced on |document_scoped_interface_provider_binding_|. It
  // is therefore safe to assume that every incoming interface request is coming
  // from the currently active document in the corresponding RenderFrame.
  if (!registry_ ||
      !registry_->TryBindInterface(interface_name, &interface_pipe)) {
    delegate_->OnInterfaceRequest(this, interface_name, &interface_pipe);
    if (interface_pipe.is_valid() &&
        !TryBindFrameInterface(interface_name, &interface_pipe, this)) {
      GetContentClient()->browser()->BindInterfaceRequestFromFrame(
          this, interface_name, std::move(interface_pipe));
    }
  }
}

std::unique_ptr<NavigationHandleImpl>
RenderFrameHostImpl::TakeNavigationHandleForSameDocumentCommit(
    const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
  bool is_browser_initiated = (params.nav_entry_id != 0);

  NavigationHandleImpl* navigation_handle =
      same_document_navigation_request_
          ? same_document_navigation_request_->navigation_handle()
          : nullptr;

  // A NavigationHandle is created for browser-initiated same-document
  // navigation. Try to take it if it's still available and matches the
  // current navigation.
  if (is_browser_initiated && navigation_handle &&
      navigation_handle->GetURL() == params.url) {
    std::unique_ptr<NavigationHandleImpl> result_navigation_handle =
        same_document_navigation_request_->TakeNavigationHandle();
    same_document_navigation_request_.reset();
    return result_navigation_handle;
  }

  // No existing NavigationHandle has been found. Create a new one, but don't
  // reset any NavigationHandle tracking an ongoing navigation, since this may
  // lead to the cancellation of the navigation.
  // First, determine if the navigation corresponds to the pending navigation
  // entry. This is the case if the NavigationHandle for a browser-initiated
  // same-document navigation was erased due to a race condition.
  // TODO(ahemery): Remove when the full mojo interface is in place.
  // (https://bugs.chromium.org/p/chromium/issues/detail?id=784904)
  bool is_renderer_initiated = true;
  int pending_nav_entry_id = 0;
  NavigationEntryImpl* pending_entry = NavigationEntryImpl::FromNavigationEntry(
      frame_tree_node()->navigator()->GetController()->GetPendingEntry());
  if (pending_entry && pending_entry->GetUniqueID() == params.nav_entry_id) {
    pending_nav_entry_id = params.nav_entry_id;
    is_renderer_initiated = pending_entry->is_renderer_initiated();
  }

  return NavigationHandleImpl::Create(
      params.url, params.redirects, frame_tree_node_, is_renderer_initiated,
      true /* was_within_same_document */, base::TimeTicks::Now(),
      pending_nav_entry_id,
      false,                  // started_from_context_menu
      CSPDisposition::CHECK,  // should_check_main_world_csp
      false,                  // is_form_submission
      nullptr);               // navigation_ui_data
}

std::unique_ptr<NavigationHandleImpl>
RenderFrameHostImpl::TakeNavigationHandleForCommit(
    const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
  NavigationHandleImpl* navigation_handle =
      navigation_request_ ? navigation_request_->navigation_handle() : nullptr;

  // Determine if the current NavigationHandle can be used.
  if (navigation_handle && navigation_handle->GetURL() == params.url) {
    std::unique_ptr<NavigationHandleImpl> result_navigation_handle =
        navigation_request()->TakeNavigationHandle();
    navigation_request_.reset();
    return result_navigation_handle;
  }

  // If the URL does not match what the NavigationHandle expects, treat the
  // commit as a new navigation. This can happen when loading a Data
  // navigation with LoadDataWithBaseURL.
  //
  // TODO(csharrison): Data navigations loaded with LoadDataWithBaseURL get
  // reset here, because the NavigationHandle tracks the URL but the params.url
  // tracks the data. The trick of saving the old entry ids for these
  // navigations should go away when this is properly handled.
  // See crbug.com/588317.
  int entry_id_for_data_nav = 0;
  bool is_renderer_initiated = true;

  // Make sure that the pending entry was really loaded via LoadDataWithBaseURL
  // and that it matches this handle.  TODO(csharrison): The pending entry's
  // base url should equal |params.base_url|. This is not the case for loads
  // with invalid base urls.
  if (navigation_handle) {
    NavigationEntryImpl* pending_entry =
        NavigationEntryImpl::FromNavigationEntry(
            frame_tree_node()->navigator()->GetController()->GetPendingEntry());
    bool pending_entry_matches_handle =
        pending_entry && pending_entry->GetUniqueID() ==
                             navigation_handle->pending_nav_entry_id();
    // TODO(csharrison): The pending entry's base url should equal
    // |validated_params.base_url|. This is not the case for loads with invalid
    // base urls.
    if (navigation_handle->GetURL() == params.base_url &&
        pending_entry_matches_handle &&
        !pending_entry->GetBaseURLForDataURL().is_empty()) {
      entry_id_for_data_nav = navigation_handle->pending_nav_entry_id();
      is_renderer_initiated = pending_entry->is_renderer_initiated();
    }
  }

  // There is no pending NavigationEntry in these cases, so pass 0 as the
  // pending_nav_entry_id. If the previous handle was a prematurely aborted
  // navigation loaded via LoadDataWithBaseURL, propagate the entry id.
  return NavigationHandleImpl::Create(
      params.url, params.redirects, frame_tree_node_, is_renderer_initiated,
      false /* was_within_same_document */, base::TimeTicks::Now(),
      entry_id_for_data_nav,
      false,                  // started_from_context_menu
      CSPDisposition::CHECK,  // should_check_main_world_csp
      false,                  // is_form_submission
      nullptr);               // navigation_ui_data
}

void RenderFrameHostImpl::BeforeUnloadTimeout() {
  if (render_view_host_->GetDelegate()->ShouldIgnoreUnresponsiveRenderer())
    return;

  SimulateBeforeUnloadAck();
}

void RenderFrameHostImpl::SetLastCommittedSiteUrl(const GURL& url) {
  GURL site_url =
      url.is_empty() ? GURL()
                     : SiteInstance::GetSiteForURL(frame_tree_node_->navigator()
                                                       ->GetController()
                                                       ->GetBrowserContext(),
                                                   url);

  if (last_committed_site_url_ == site_url)
    return;

  if (!last_committed_site_url_.is_empty()) {
    RenderProcessHostImpl::RemoveFrameWithSite(
        frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
        GetProcess(), last_committed_site_url_);
  }

  last_committed_site_url_ = site_url;

  if (!last_committed_site_url_.is_empty()) {
    RenderProcessHostImpl::AddFrameWithSite(
        frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
        GetProcess(), last_committed_site_url_);
  }
}

#if defined(OS_ANDROID)

class RenderFrameHostImpl::JavaInterfaceProvider
    : public service_manager::mojom::InterfaceProvider {
 public:
  using BindCallback =
      base::Callback<void(const std::string&, mojo::ScopedMessagePipeHandle)>;

  JavaInterfaceProvider(
      const BindCallback& bind_callback,
      service_manager::mojom::InterfaceProviderRequest request)
      : bind_callback_(bind_callback), binding_(this, std::move(request)) {}
  ~JavaInterfaceProvider() override = default;

 private:
  // service_manager::mojom::InterfaceProvider:
  void GetInterface(const std::string& interface_name,
                    mojo::ScopedMessagePipeHandle handle) override {
    bind_callback_.Run(interface_name, std::move(handle));
  }

  const BindCallback bind_callback_;
  mojo::Binding<service_manager::mojom::InterfaceProvider> binding_;

  DISALLOW_COPY_AND_ASSIGN(JavaInterfaceProvider);
};

base::android::ScopedJavaLocalRef<jobject>
RenderFrameHostImpl::GetJavaRenderFrameHost() {
  RenderFrameHostAndroid* render_frame_host_android =
      static_cast<RenderFrameHostAndroid*>(
          GetUserData(kRenderFrameHostAndroidKey));
  if (!render_frame_host_android) {
    service_manager::mojom::InterfaceProviderPtr interface_provider_ptr;
    java_interface_registry_ = std::make_unique<JavaInterfaceProvider>(
        base::Bind(&RenderFrameHostImpl::ForwardGetInterfaceToRenderFrame,
                   weak_ptr_factory_.GetWeakPtr()),
        mojo::MakeRequest(&interface_provider_ptr));
    render_frame_host_android =
        new RenderFrameHostAndroid(this, std::move(interface_provider_ptr));
    SetUserData(kRenderFrameHostAndroidKey,
                base::WrapUnique(render_frame_host_android));
  }
  return render_frame_host_android->GetJavaObject();
}

service_manager::InterfaceProvider* RenderFrameHostImpl::GetJavaInterfaces() {
  if (!java_interfaces_) {
    service_manager::mojom::InterfaceProviderPtr provider;
    BindInterfaceRegistryForRenderFrameHost(mojo::MakeRequest(&provider), this);
    java_interfaces_.reset(new service_manager::InterfaceProvider);
    java_interfaces_->Bind(std::move(provider));
  }
  return java_interfaces_.get();
}

void RenderFrameHostImpl::ForwardGetInterfaceToRenderFrame(
    const std::string& interface_name,
    mojo::ScopedMessagePipeHandle pipe) {
  GetRemoteInterfaces()->GetInterfaceByName(interface_name, std::move(pipe));
}
#endif

void RenderFrameHostImpl::ForEachImmediateLocalRoot(
    const base::Callback<void(RenderFrameHostImpl*)>& callback) {
  if (!frame_tree_node_->child_count())
    return;

  base::queue<FrameTreeNode*> queue;
  for (size_t index = 0; index < frame_tree_node_->child_count(); ++index)
    queue.push(frame_tree_node_->child_at(index));
  while (queue.size()) {
    FrameTreeNode* current = queue.front();
    queue.pop();
    if (current->current_frame_host()->is_local_root()) {
      callback.Run(current->current_frame_host());
    } else {
      for (size_t index = 0; index < current->child_count(); ++index)
        queue.push(current->child_at(index));
    }
  }
}

void RenderFrameHostImpl::SetVisibilityForChildViews(bool visible) {
  ForEachImmediateLocalRoot(base::Bind(
      [](bool is_visible, RenderFrameHostImpl* frame_host) {
        if (auto* view = frame_host->GetView())
          return is_visible ? view->Show() : view->Hide();
      },
      visible));
}

mojom::FrameNavigationControl* RenderFrameHostImpl::GetNavigationControl() {
  if (!navigation_control_)
    GetRemoteAssociatedInterfaces()->GetInterface(&navigation_control_);
  return navigation_control_.get();
}

bool RenderFrameHostImpl::ValidateDidCommitParams(
    FrameHostMsg_DidCommitProvisionalLoad_Params* validated_params) {
  RenderProcessHost* process = GetProcess();

  // Attempts to commit certain off-limits URL should be caught more strictly
  // than our FilterURL checks.  If a renderer violates this policy, it
  // should be killed.
  if (!CanCommitURL(validated_params->url)) {
    VLOG(1) << "Blocked URL " << validated_params->url.spec();
    // Kills the process.
    bad_message::ReceivedBadMessage(process,
                                    bad_message::RFH_CAN_COMMIT_URL_BLOCKED);
    return false;
  }

  // Verify that the origin passed from the renderer process is valid and can
  // be allowed to commit in this RenderFrameHost.
  if (!CanCommitOrigin(validated_params->origin, validated_params->url)) {
    DEBUG_ALIAS_FOR_ORIGIN(origin_debug_alias, validated_params->origin);
    bad_message::ReceivedBadMessage(process,
                                    bad_message::RFH_INVALID_ORIGIN_ON_COMMIT);
    return false;
  }

  // Without this check, an evil renderer can trick the browser into creating
  // a navigation entry for a banned URL.  If the user clicks the back button
  // followed by the forward button (or clicks reload, or round-trips through
  // session restore, etc), we'll think that the browser commanded the
  // renderer to load the URL and grant the renderer the privileges to request
  // the URL.  To prevent this attack, we block the renderer from inserting
  // banned URLs into the navigation controller in the first place.
  //
  // TODO(https://crbug.com/172694): Currently, when FilterURL detects a bad URL
  // coming from the renderer, it overwrites that URL to about:blank, which
  // requires |validated_params| to be mutable. Once we kill the renderer
  // instead, the signature of RenderFrameHostImpl::DidCommitProvisionalLoad can
  // be modified to take |validated_params| by const reference.
  process->FilterURL(false, &validated_params->url);
  process->FilterURL(true, &validated_params->referrer.url);
  for (std::vector<GURL>::iterator it(validated_params->redirects.begin());
       it != validated_params->redirects.end(); ++it) {
    process->FilterURL(false, &(*it));
  }
  process->FilterURL(true, &validated_params->searchable_form_url);

  // Without this check, the renderer can trick the browser into using
  // filenames it can't access in a future session restore.
  if (!CanAccessFilesOfPageState(validated_params->page_state)) {
    bad_message::ReceivedBadMessage(
        process, bad_message::RFH_CAN_ACCESS_FILES_OF_PAGE_STATE);
    return false;
  }

  return true;
}

void RenderFrameHostImpl::UMACommitReport(
    FrameMsg_UILoadMetricsReportType::Value report_type,
    const base::TimeTicks& ui_timestamp) {
  if (report_type == FrameMsg_UILoadMetricsReportType::REPORT_LINK) {
    UMA_HISTOGRAM_CUSTOM_TIMES("Navigation.UI_OnCommitProvisionalLoad.Link",
                               base::TimeTicks::Now() - ui_timestamp,
                               base::TimeDelta::FromMilliseconds(10),
                               base::TimeDelta::FromMinutes(10), 100);
  } else if (report_type == FrameMsg_UILoadMetricsReportType::REPORT_INTENT) {
    UMA_HISTOGRAM_CUSTOM_TIMES("Navigation.UI_OnCommitProvisionalLoad.Intent",
                               base::TimeTicks::Now() - ui_timestamp,
                               base::TimeDelta::FromMilliseconds(10),
                               base::TimeDelta::FromMinutes(10), 100);
  }
}

void RenderFrameHostImpl::UpdateSiteURL(const GURL& url,
                                        bool url_is_unreachable) {
  if (url_is_unreachable || delegate_->GetAsInterstitialPage()) {
    SetLastCommittedSiteUrl(GURL());
  } else {
    SetLastCommittedSiteUrl(url);
  }
}

bool RenderFrameHostImpl::DidCommitNavigationInternal(
    FrameHostMsg_DidCommitProvisionalLoad_Params* validated_params,
    bool is_same_document_navigation) {
  // Sanity-check the page transition for frame type.
  DCHECK_EQ(ui::PageTransitionIsMainFrame(validated_params->transition),
            !GetParent());

  UMACommitReport(validated_params->report_type,
                  validated_params->ui_timestamp);

  if (!ValidateDidCommitParams(validated_params))
    return false;

  if (!navigation_request_) {
    // The browser has not been notified about the start of the
    // load in this renderer yet (e.g., for same-document navigations that start
    // in the renderer). Do it now.
    // TODO(ahemery): This should never be true for cross-document navigation
    // apart from race conditions. Move to same navigation specific code when
    // the full mojo interface is in place.
    // (https://bugs.chromium.org/p/chromium/issues/detail?id=784904)
    if (!is_loading()) {
      bool was_loading = frame_tree_node()->frame_tree()->IsLoading();
      is_loading_ = true;
      frame_tree_node()->DidStartLoading(true, was_loading);
    }
    pending_commit_ = false;
  }

  if (navigation_request_)
    was_discarded_ = navigation_request_->request_params().was_discarded;

  // Find the appropriate NavigationHandle for this navigation.
  std::unique_ptr<NavigationHandleImpl> navigation_handle;

  if (is_same_document_navigation)
    navigation_handle =
        TakeNavigationHandleForSameDocumentCommit(*validated_params);
  else
    navigation_handle = TakeNavigationHandleForCommit(*validated_params);
  DCHECK(navigation_handle);

  UpdateSiteURL(validated_params->url, validated_params->url_is_unreachable);

  accessibility_reset_count_ = 0;
  frame_tree_node()->navigator()->DidNavigate(this, *validated_params,
                                              std::move(navigation_handle),
                                              is_same_document_navigation);

  return true;
}

void RenderFrameHostImpl::OnSameDocumentCommitProcessed(
    int64_t navigation_id,
    bool should_replace_current_entry,
    blink::mojom::CommitResult result) {
  // If the NavigationRequest was deleted, another navigation commit started to
  // be processed. Let the latest commit go through and stop doing anything.
  if (!same_document_navigation_request_ ||
      same_document_navigation_request_->navigation_handle()
              ->GetNavigationId() != navigation_id) {
    return;
  }

  if (result == blink::mojom::CommitResult::RestartCrossDocument) {
    // The navigation could not be committed as a same-document navigation.
    // Restart the navigation cross-document.
    frame_tree_node_->navigator()->RestartNavigationAsCrossDocument(
        std::move(same_document_navigation_request_));
  }

  if (result == blink::mojom::CommitResult::Aborted) {
    // Note: if the commit was successful, navigation_handle_ is reset in
    // DidCommitProvisionalLoad.
    same_document_navigation_request_.reset();
  }
}

}  // namespace content