chrome/browser/profiles/profile_io_data.cc

// Copyright (c) 2012 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 "chrome/browser/profiles/profile_io_data.h"

#include <string>

#include "base/basictypes.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/debug/alias.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/prefs/pref_service.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/thread_task_runner_handle.h"
#include "base/threading/sequenced_worker_pool.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/content_settings/cookie_settings_factory.h"
#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
#include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
#include "chrome/browser/devtools/devtools_network_controller.h"
#include "chrome/browser/devtools/devtools_network_transaction_factory.h"
#include "chrome/browser/download/download_service.h"
#include "chrome/browser/download/download_service_factory.h"
#include "chrome/browser/io_thread.h"
#include "chrome/browser/media/media_device_id_salt.h"
#include "chrome/browser/net/about_protocol_handler.h"
#include "chrome/browser/net/chrome_http_user_agent_settings.h"
#include "chrome/browser/net/chrome_net_log.h"
#include "chrome/browser/net/chrome_network_delegate.h"
#include "chrome/browser/net/chrome_url_request_context_getter.h"
#include "chrome/browser/net/cookie_store_util.h"
#include "chrome/browser/net/proxy_service_factory.h"
#include "chrome/browser/net/resource_prefetch_predictor_observer.h"
#include "chrome/browser/predictors/resource_prefetch_predictor.h"
#include "chrome/browser/predictors/resource_prefetch_predictor_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/search/new_tab_page_interceptor_service.h"
#include "chrome/browser/ui/search/new_tab_page_interceptor_service_factory.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "components/content_settings/core/browser/content_settings_provider.h"
#include "components/content_settings/core/browser/cookie_settings.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h"
#include "components/dom_distiller/core/url_constants.h"
#include "components/sync_driver/pref_names.h"
#include "components/url_formatter/url_fixer.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/host_zoom_map.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/resource_context.h"
#include "net/base/keygen_handler.h"
#include "net/cert/cert_verifier.h"
#include "net/cookies/canonical_cookie.h"
#include "net/http/http_transaction_factory.h"
#include "net/http/http_util.h"
#include "net/http/transport_security_persister.h"
#include "net/proxy/proxy_config_service_fixed.h"
#include "net/proxy/proxy_script_fetcher_impl.h"
#include "net/proxy/proxy_service.h"
#include "net/ssl/channel_id_service.h"
#include "net/ssl/client_cert_store.h"
#include "net/url_request/certificate_report_sender.h"
#include "net/url_request/data_protocol_handler.h"
#include "net/url_request/file_protocol_handler.h"
#include "net/url_request/ftp_protocol_handler.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_file_job.h"
#include "net/url_request/url_request_intercepting_job_factory.h"
#include "net/url_request/url_request_interceptor.h"
#include "net/url_request/url_request_job_factory_impl.h"

#if defined(ENABLE_CONFIGURATION_POLICY)
#include "chrome/browser/policy/cloud/policy_header_service_factory.h"
#include "chrome/browser/policy/policy_helpers.h"
#include "components/policy/core/browser/url_blacklist_manager.h"
#include "components/policy/core/common/cloud/policy_header_io_helper.h"
#include "components/policy/core/common/cloud/policy_header_service.h"
#include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
#endif

#if defined(ENABLE_EXTENSIONS)
#include "chrome/browser/extensions/extension_cookie_monster_delegate.h"
#include "chrome/browser/extensions/extension_resource_protocols.h"
#include "extensions/browser/extension_protocols.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/extension_throttle_manager.h"
#include "extensions/browser/info_map.h"
#include "extensions/common/constants.h"
#endif

#if defined(ENABLE_SUPERVISED_USERS)
#include "chrome/browser/supervised_user/supervised_user_service.h"
#include "chrome/browser/supervised_user/supervised_user_service_factory.h"
#include "chrome/browser/supervised_user/supervised_user_url_filter.h"
#endif

#if defined(OS_ANDROID)
#include "content/public/browser/android/content_protocol_handler.h"
#endif  // defined(OS_ANDROID)

#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/fileapi/external_file_protocol_handler.h"
#include "chrome/browser/chromeos/login/startup_utils.h"
#include "chrome/browser/chromeos/net/cert_verify_proc_chromeos.h"
#include "chrome/browser/chromeos/net/client_cert_filter_chromeos.h"
#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
#include "chrome/browser/chromeos/policy/policy_cert_service.h"
#include "chrome/browser/chromeos/policy/policy_cert_service_factory.h"
#include "chrome/browser/chromeos/policy/policy_cert_verifier.h"
#include "chrome/browser/chromeos/profiles/profile_helper.h"
#include "chrome/browser/chromeos/settings/cros_settings.h"
#include "chrome/browser/net/nss_context.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/settings/cros_settings_names.h"
#include "chromeos/tpm/tpm_token_info_getter.h"
#include "components/user_manager/user.h"
#include "components/user_manager/user_manager.h"
#include "crypto/nss_util.h"
#include "crypto/nss_util_internal.h"
#include "net/cert/cert_verifier.h"
#include "net/cert/multi_threaded_cert_verifier.h"
#include "net/ssl/client_cert_store_chromeos.h"
#endif  // defined(OS_CHROMEOS)

#if defined(USE_NSS_CERTS)
#include "chrome/browser/ui/crypto_module_delegate_nss.h"
#include "net/ssl/client_cert_store_nss.h"
#endif

#if defined(OS_WIN)
#include "net/ssl/client_cert_store_win.h"
#endif

#if defined(OS_MACOSX)
#include "net/ssl/client_cert_store_mac.h"
#endif

using content::BrowserContext;
using content::BrowserThread;
using content::ResourceContext;

namespace {

net::CertVerifier* g_cert_verifier_for_testing = nullptr;

#if defined(DEBUG_DEVTOOLS)
bool IsSupportedDevToolsURL(const GURL& url, base::FilePath* path) {
  std::string bundled_path_prefix(chrome::kChromeUIDevToolsBundledPath);
  bundled_path_prefix = "/" + bundled_path_prefix + "/";

  if (!url.SchemeIs(content::kChromeDevToolsScheme) ||
      url.host() != chrome::kChromeUIDevToolsHost ||
      !base::StartsWith(url.path(), bundled_path_prefix,
                        base::CompareCase::INSENSITIVE_ASCII)) {
    return false;
  }

  if (!url.is_valid()) {
    NOTREACHED();
    return false;
  }

  // Remove Query and Ref from URL.
  GURL stripped_url;
  GURL::Replacements replacements;
  replacements.ClearQuery();
  replacements.ClearRef();
  stripped_url = url.ReplaceComponents(replacements);

  std::string relative_path;
  const std::string& spec = stripped_url.possibly_invalid_spec();
  const url::Parsed& parsed = stripped_url.parsed_for_possibly_invalid_spec();
  int offset = parsed.CountCharactersBefore(url::Parsed::PATH, false);
  if (offset < static_cast<int>(spec.size()))
    relative_path.assign(spec.substr(offset + bundled_path_prefix.length()));

  // Check that |relative_path| is not an absolute path (otherwise
  // AppendASCII() will DCHECK).  The awkward use of StringType is because on
  // some systems FilePath expects a std::string, but on others a std::wstring.
  base::FilePath p(
      base::FilePath::StringType(relative_path.begin(), relative_path.end()));
  if (p.IsAbsolute())
    return false;

  base::FilePath inspector_dir;
  if (!PathService::Get(chrome::DIR_INSPECTOR, &inspector_dir))
    return false;

  if (inspector_dir.empty())
    return false;

  *path = inspector_dir.AppendASCII(relative_path);
  return true;
}

class DebugDevToolsInterceptor : public net::URLRequestInterceptor {
 public:
  // net::URLRequestInterceptor implementation.
  net::URLRequestJob* MaybeInterceptRequest(
      net::URLRequest* request,
      net::NetworkDelegate* network_delegate) const override {
    base::FilePath path;
    if (IsSupportedDevToolsURL(request->url(), &path))
      return new net::URLRequestFileJob(
          request, network_delegate, path,
          content::BrowserThread::GetBlockingPool()->
              GetTaskRunnerWithShutdownBehavior(
                  base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));

    return NULL;
  }
};
#endif  // defined(DEBUG_DEVTOOLS)

#if defined(OS_CHROMEOS)
// The following four functions are responsible for initializing NSS for each
// profile on ChromeOS, which has a separate NSS database and TPM slot
// per-profile.
//
// Initialization basically follows these steps:
// 1) Get some info from user_manager::UserManager about the User for this
// profile.
// 2) Tell nss_util to initialize the software slot for this profile.
// 3) Wait for the TPM module to be loaded by nss_util if it isn't already.
// 4) Ask CryptohomeClient which TPM slot id corresponds to this profile.
// 5) Tell nss_util to use that slot id on the TPM module.
//
// Some of these steps must happen on the UI thread, others must happen on the
// IO thread:
//               UI thread                              IO Thread
//
//  ProfileIOData::InitializeOnUIThread
//                   |
//  ProfileHelper::Get()->GetUserByProfile()
//                   \---------------------------------------v
//                                                 StartNSSInitOnIOThread
//                                                           |
//                                          crypto::InitializeNSSForChromeOSUser
//                                                           |
//                                                crypto::IsTPMTokenReady
//                                                           |
//                                          StartTPMSlotInitializationOnIOThread
//                   v---------------------------------------/
//     GetTPMInfoForUserOnUIThread
//                   |
// chromeos::TPMTokenInfoGetter::Start
//                   |
//     DidGetTPMInfoForUserOnUIThread
//                   \---------------------------------------v
//                                          crypto::InitializeTPMForChromeOSUser

void DidGetTPMInfoForUserOnUIThread(
    scoped_ptr<chromeos::TPMTokenInfoGetter> getter,
    const std::string& username_hash,
    const chromeos::TPMTokenInfo& info) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (info.tpm_is_enabled && info.token_slot_id != -1) {
    DVLOG(1) << "Got TPM slot for " << username_hash << ": "
             << info.token_slot_id;
    BrowserThread::PostTask(
        BrowserThread::IO,
        FROM_HERE,
        base::Bind(&crypto::InitializeTPMForChromeOSUser,
                   username_hash, info.token_slot_id));
  } else {
    NOTREACHED() << "TPMTokenInfoGetter reported invalid token.";
  }
}

void GetTPMInfoForUserOnUIThread(const std::string& username,
                                 const std::string& username_hash) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  DVLOG(1) << "Getting TPM info from cryptohome for "
           << " " << username << " " << username_hash;
  scoped_ptr<chromeos::TPMTokenInfoGetter> scoped_token_info_getter =
      chromeos::TPMTokenInfoGetter::CreateForUserToken(
          username,
          chromeos::DBusThreadManager::Get()->GetCryptohomeClient(),
          base::ThreadTaskRunnerHandle::Get());
  chromeos::TPMTokenInfoGetter* token_info_getter =
      scoped_token_info_getter.get();

  // Bind |token_info_getter| to the callback to ensure it does not go away
  // before TPM token info is fetched.
  // TODO(tbarzic, pneubeck): Handle this in a nicer way when this logic is
  //     moved to a separate profile service.
  token_info_getter->Start(
      base::Bind(&DidGetTPMInfoForUserOnUIThread,
                 base::Passed(&scoped_token_info_getter),
                 username_hash));
}

void StartTPMSlotInitializationOnIOThread(const std::string& username,
                                          const std::string& username_hash) {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);

  BrowserThread::PostTask(
      BrowserThread::UI,
      FROM_HERE,
      base::Bind(&GetTPMInfoForUserOnUIThread, username, username_hash));
}

void StartNSSInitOnIOThread(const std::string& username,
                            const std::string& username_hash,
                            const base::FilePath& path) {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  DVLOG(1) << "Starting NSS init for " << username
           << "  hash:" << username_hash;

  // Make sure NSS is initialized for the user.
  crypto::InitializeNSSForChromeOSUser(username_hash, path);

  // Check if it's OK to initialize TPM for the user before continuing. This
  // may not be the case if the TPM slot initialization was previously
  // requested for the same user.
  if (!crypto::ShouldInitializeTPMForChromeOSUser(username_hash))
    return;

  crypto::WillInitializeTPMForChromeOSUser(username_hash);

  if (crypto::IsTPMTokenEnabledForNSS()) {
    if (crypto::IsTPMTokenReady(base::Bind(
            &StartTPMSlotInitializationOnIOThread, username, username_hash))) {
      StartTPMSlotInitializationOnIOThread(username, username_hash);
    } else {
      DVLOG(1) << "Waiting for tpm ready ...";
    }
  } else {
    crypto::InitializePrivateSoftwareSlotForChromeOSUser(username_hash);
  }
}
#endif  // defined(OS_CHROMEOS)

#if defined(USE_NSS_CERTS)
void InitializeAndPassKeygenHandler(
    scoped_ptr<net::KeygenHandler> keygen_handler,
    const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback,
    scoped_ptr<ChromeNSSCryptoModuleDelegate> delegate) {
  if (delegate)
    keygen_handler->set_crypto_module_delegate(delegate.Pass());
  callback.Run(keygen_handler.Pass());
}
#endif  // defined(USE_NSS_CERTS)

// For safe shutdown, must be called before the ProfileIOData is destroyed.
void NotifyContextGettersOfShutdownOnIO(
    scoped_ptr<ProfileIOData::ChromeURLRequestContextGetterVector> getters) {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  ProfileIOData::ChromeURLRequestContextGetterVector::iterator iter;
  for (auto& chrome_context_getter : *getters)
    chrome_context_getter->NotifyContextShuttingDown();
}

}  // namespace

void ProfileIOData::InitializeOnUIThread(Profile* profile) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  PrefService* pref_service = profile->GetPrefs();
  PrefService* local_state_pref_service = g_browser_process->local_state();

  scoped_ptr<ProfileParams> params(new ProfileParams);
  params->path = profile->GetPath();

  params->io_thread = g_browser_process->io_thread();

  params->cookie_settings = CookieSettingsFactory::GetForProfile(profile);
  params->host_content_settings_map = profile->GetHostContentSettingsMap();
  params->ssl_config_service = profile->GetSSLConfigService();

  scoped_refptr<net::CookieMonsterDelegate> next_cookie_monster_delegate;
#if defined(ENABLE_EXTENSIONS)
  params->extension_info_map =
      extensions::ExtensionSystem::Get(profile)->info_map();
  next_cookie_monster_delegate = new ExtensionCookieMonsterDelegate(profile);
#endif
  params->cookie_monster_delegate =
      chrome_browser_net::CreateCookieDelegate(next_cookie_monster_delegate);

  if (predictors::ResourcePrefetchPredictor* predictor =
          predictors::ResourcePrefetchPredictorFactory::GetForProfile(
              profile)) {
    resource_prefetch_predictor_observer_.reset(
        new chrome_browser_net::ResourcePrefetchPredictorObserver(predictor));
  }

  ProtocolHandlerRegistry* protocol_handler_registry =
      ProtocolHandlerRegistryFactory::GetForBrowserContext(profile);
  DCHECK(protocol_handler_registry);

  // The profile instance is only available here in the InitializeOnUIThread
  // method, so we create the url job factory here, then save it for
  // later delivery to the job factory in Init().
  params->protocol_handler_interceptor =
      protocol_handler_registry->CreateJobInterceptorFactory();

  NewTabPageInterceptorService* new_tab_interceptor_service =
      NewTabPageInterceptorServiceFactory::GetForProfile(profile);
  if (new_tab_interceptor_service) {
    params->new_tab_page_interceptor =
        new_tab_interceptor_service->CreateInterceptor();
  }

  params->proxy_config_service
      .reset(ProxyServiceFactory::CreateProxyConfigService(
           profile->GetProxyConfigTracker()));
#if defined(ENABLE_SUPERVISED_USERS)
  SupervisedUserService* supervised_user_service =
      SupervisedUserServiceFactory::GetForProfile(profile);
  params->supervised_user_url_filter =
      supervised_user_service->GetURLFilterForIOThread();
#endif
#if defined(OS_CHROMEOS)
  user_manager::UserManager* user_manager = user_manager::UserManager::Get();
  if (user_manager) {
    const user_manager::User* user =
        chromeos::ProfileHelper::Get()->GetUserByProfile(profile);
    // No need to initialize NSS for users with empty username hash:
    // Getters for a user's NSS slots always return NULL slot if the user's
    // username hash is empty, even when the NSS is not initialized for the
    // user.
    if (user && !user->username_hash().empty()) {
      params->username_hash = user->username_hash();
      DCHECK(!params->username_hash.empty());
      BrowserThread::PostTask(BrowserThread::IO,
                              FROM_HERE,
                              base::Bind(&StartNSSInitOnIOThread,
                                         user->email(),
                                         user->username_hash(),
                                         profile->GetPath()));

      // Use the device-wide system key slot only if the user is of the same
      // domain as the device is registered to.
      policy::BrowserPolicyConnectorChromeOS* connector =
          g_browser_process->platform_part()
              ->browser_policy_connector_chromeos();
      params->use_system_key_slot =
          connector->GetUserAffiliation(user->email()) ==
          policy::USER_AFFILIATION_MANAGED;
    }
  }
#endif

  params->profile = profile;
  profile_params_.reset(params.release());

  ChromeNetworkDelegate::InitializePrefsOnUIThread(
      &enable_referrers_,
      &enable_do_not_track_,
      &force_google_safesearch_,
      &force_youtube_safety_mode_,
      pref_service);

  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner =
      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);

  chrome_http_user_agent_settings_.reset(
      new ChromeHttpUserAgentSettings(pref_service));

  // These members are used only for sign in, which is not enabled
  // in incognito mode.  So no need to initialize them.
  if (!IsOffTheRecord()) {
    google_services_user_account_id_.Init(
        prefs::kGoogleServicesUserAccountId, pref_service);
    google_services_user_account_id_.MoveToThread(io_task_runner);

    sync_disabled_.Init(sync_driver::prefs::kSyncManaged, pref_service);
    sync_disabled_.MoveToThread(io_task_runner);

    signin_allowed_.Init(prefs::kSigninAllowed, pref_service);
    signin_allowed_.MoveToThread(io_task_runner);
  }

  quick_check_enabled_.Init(prefs::kQuickCheckEnabled,
                            local_state_pref_service);
  quick_check_enabled_.MoveToThread(io_task_runner);

  media_device_id_salt_ = new MediaDeviceIDSalt(pref_service, IsOffTheRecord());

  network_prediction_options_.Init(prefs::kNetworkPredictionOptions,
                                   pref_service);

  network_prediction_options_.MoveToThread(io_task_runner);

#if defined(OS_CHROMEOS)
  scoped_ptr<policy::PolicyCertVerifier> verifier =
      policy::PolicyCertServiceFactory::CreateForProfile(profile);
  policy_cert_verifier_ = verifier.get();
  cert_verifier_ = verifier.Pass();
#endif
  // The URLBlacklistManager has to be created on the UI thread to register
  // observers of |pref_service|, and it also has to clean up on
  // ShutdownOnUIThread to release these observers on the right thread.
  // Don't pass it in |profile_params_| to make sure it is correctly cleaned up,
  // in particular when this ProfileIOData isn't |initialized_| during deletion.
#if defined(ENABLE_CONFIGURATION_POLICY)
  policy::URLBlacklist::SegmentURLCallback callback =
      static_cast<policy::URLBlacklist::SegmentURLCallback>(
          url_formatter::SegmentURL);
  base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
  scoped_refptr<base::SequencedTaskRunner> background_task_runner =
      pool->GetSequencedTaskRunner(pool->GetSequenceToken());
  url_blacklist_manager_.reset(new policy::URLBlacklistManager(
      pref_service, background_task_runner, io_task_runner, callback,
      base::Bind(policy::OverrideBlacklistForURL)));

  if (!IsOffTheRecord()) {
    // Add policy headers for non-incognito requests.
    policy::PolicyHeaderService* policy_header_service =
        policy::PolicyHeaderServiceFactory::GetForBrowserContext(profile);
    if (policy_header_service) {
      policy_header_helper_ =
          policy_header_service->CreatePolicyHeaderIOHelper(io_task_runner);
    }
  }
#endif

  incognito_availibility_pref_.Init(
      prefs::kIncognitoModeAvailability, pref_service);
  incognito_availibility_pref_.MoveToThread(io_task_runner);

  initialized_on_UI_thread_ = true;

  // We need to make sure that content initializes its own data structures that
  // are associated with each ResourceContext because we might post this
  // object to the IO thread after this function.
  BrowserContext::EnsureResourceContextInitialized(profile);
}

ProfileIOData::MediaRequestContext::MediaRequestContext() {
}

void ProfileIOData::MediaRequestContext::SetHttpTransactionFactory(
    scoped_ptr<net::HttpTransactionFactory> http_factory) {
  http_factory_ = http_factory.Pass();
  set_http_transaction_factory(http_factory_.get());
}

ProfileIOData::MediaRequestContext::~MediaRequestContext() {
  AssertNoURLRequests();
}

ProfileIOData::AppRequestContext::AppRequestContext() {
}

void ProfileIOData::AppRequestContext::SetCookieStore(
    net::CookieStore* cookie_store) {
  cookie_store_ = cookie_store;
  set_cookie_store(cookie_store);
}

void ProfileIOData::AppRequestContext::SetHttpTransactionFactory(
    scoped_ptr<net::HttpTransactionFactory> http_factory) {
  http_factory_ = http_factory.Pass();
  set_http_transaction_factory(http_factory_.get());
}

void ProfileIOData::AppRequestContext::SetJobFactory(
    scoped_ptr<net::URLRequestJobFactory> job_factory) {
  job_factory_ = job_factory.Pass();
  set_job_factory(job_factory_.get());
}

ProfileIOData::AppRequestContext::~AppRequestContext() {
  AssertNoURLRequests();
}

ProfileIOData::ProfileParams::ProfileParams()
    : io_thread(NULL),
#if defined(OS_CHROMEOS)
      use_system_key_slot(false),
#endif
      profile(NULL) {
}

ProfileIOData::ProfileParams::~ProfileParams() {}

ProfileIOData::ProfileIOData(Profile::ProfileType profile_type)
    : initialized_(false),
#if defined(OS_CHROMEOS)
      policy_cert_verifier_(NULL),
      use_system_key_slot_(false),
#endif
      resource_context_(new ResourceContext(this)),
      initialized_on_UI_thread_(false),
      profile_type_(profile_type) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
}

ProfileIOData::~ProfileIOData() {
  if (BrowserThread::IsMessageLoopValid(BrowserThread::IO))
    DCHECK_CURRENTLY_ON(BrowserThread::IO);

  // Pull the contents of the request context maps onto the stack for sanity
  // checking of values in a minidump. http://crbug.com/260425
  size_t num_app_contexts = app_request_context_map_.size();
  size_t num_media_contexts = isolated_media_request_context_map_.size();
  size_t current_context = 0;
  static const size_t kMaxCachedContexts = 20;
  net::URLRequestContext* app_context_cache[kMaxCachedContexts] = {0};
  void* app_context_vtable_cache[kMaxCachedContexts] = {0};
  net::URLRequestContext* media_context_cache[kMaxCachedContexts] = {0};
  void* media_context_vtable_cache[kMaxCachedContexts] = {0};
  void* tmp_vtable = NULL;
  base::debug::Alias(&num_app_contexts);
  base::debug::Alias(&num_media_contexts);
  base::debug::Alias(&current_context);
  base::debug::Alias(app_context_cache);
  base::debug::Alias(app_context_vtable_cache);
  base::debug::Alias(media_context_cache);
  base::debug::Alias(media_context_vtable_cache);
  base::debug::Alias(&tmp_vtable);

  current_context = 0;
  for (URLRequestContextMap::const_iterator it =
           app_request_context_map_.begin();
       current_context < kMaxCachedContexts &&
           it != app_request_context_map_.end();
       ++it, ++current_context) {
    app_context_cache[current_context] = it->second;
    memcpy(&app_context_vtable_cache[current_context],
           static_cast<void*>(it->second), sizeof(void*));
  }

  current_context = 0;
  for (URLRequestContextMap::const_iterator it =
           isolated_media_request_context_map_.begin();
       current_context < kMaxCachedContexts &&
           it != isolated_media_request_context_map_.end();
       ++it, ++current_context) {
    media_context_cache[current_context] = it->second;
    memcpy(&media_context_vtable_cache[current_context],
           static_cast<void*>(it->second), sizeof(void*));
  }

  // Destroy certificate_report_sender_ before main_request_context_,
  // since the former has a reference to the latter.
  if (transport_security_state_)
    transport_security_state_->SetReportSender(nullptr);
  certificate_report_sender_.reset();

  // TODO(ajwong): These AssertNoURLRequests() calls are unnecessary since they
  // are already done in the URLRequestContext destructor.
  if (main_request_context_)
    main_request_context_->AssertNoURLRequests();
  if (extensions_request_context_)
    extensions_request_context_->AssertNoURLRequests();

  current_context = 0;
  for (URLRequestContextMap::iterator it = app_request_context_map_.begin();
       it != app_request_context_map_.end(); ++it) {
    if (current_context < kMaxCachedContexts) {
      CHECK_EQ(app_context_cache[current_context], it->second);
      memcpy(&tmp_vtable, static_cast<void*>(it->second), sizeof(void*));
      CHECK_EQ(app_context_vtable_cache[current_context], tmp_vtable);
    }
    it->second->AssertNoURLRequests();
    delete it->second;
    current_context++;
  }

  current_context = 0;
  for (URLRequestContextMap::iterator it =
           isolated_media_request_context_map_.begin();
       it != isolated_media_request_context_map_.end(); ++it) {
    if (current_context < kMaxCachedContexts) {
      CHECK_EQ(media_context_cache[current_context], it->second);
      memcpy(&tmp_vtable, static_cast<void*>(it->second), sizeof(void*));
      CHECK_EQ(media_context_vtable_cache[current_context], tmp_vtable);
    }
    it->second->AssertNoURLRequests();
    delete it->second;
    current_context++;
  }
}

// static
ProfileIOData* ProfileIOData::FromResourceContext(
    content::ResourceContext* rc) {
  return (static_cast<ResourceContext*>(rc))->io_data_;
}

// static
bool ProfileIOData::IsHandledProtocol(const std::string& scheme) {
  DCHECK_EQ(scheme, base::ToLowerASCII(scheme));
  static const char* const kProtocolList[] = {
    url::kFileScheme,
    content::kChromeDevToolsScheme,
    dom_distiller::kDomDistillerScheme,
#if defined(ENABLE_EXTENSIONS)
    extensions::kExtensionScheme,
    extensions::kExtensionResourceScheme,
#endif
    content::kChromeUIScheme,
    url::kDataScheme,
#if defined(OS_CHROMEOS)
    content::kExternalFileScheme,
#endif  // defined(OS_CHROMEOS)
    url::kAboutScheme,
#if !defined(DISABLE_FTP_SUPPORT)
    url::kFtpScheme,
#endif  // !defined(DISABLE_FTP_SUPPORT)
    url::kBlobScheme,
    url::kFileSystemScheme,
    chrome::kChromeSearchScheme,
  };
  for (size_t i = 0; i < arraysize(kProtocolList); ++i) {
    if (scheme == kProtocolList[i])
      return true;
  }
  return net::URLRequest::IsHandledProtocol(scheme);
}

// static
bool ProfileIOData::IsHandledURL(const GURL& url) {
  if (!url.is_valid()) {
    // We handle error cases.
    return true;
  }

  return IsHandledProtocol(url.scheme());
}

// static
void ProfileIOData::InstallProtocolHandlers(
    net::URLRequestJobFactoryImpl* job_factory,
    content::ProtocolHandlerMap* protocol_handlers) {
  for (content::ProtocolHandlerMap::iterator it =
           protocol_handlers->begin();
       it != protocol_handlers->end();
       ++it) {
    bool set_protocol = job_factory->SetProtocolHandler(
        it->first, it->second.release());
    DCHECK(set_protocol);
  }
  protocol_handlers->clear();
}

// static
void ProfileIOData::SetCertVerifierForTesting(
    net::CertVerifier* cert_verifier) {
  g_cert_verifier_for_testing = cert_verifier;
}

content::ResourceContext* ProfileIOData::GetResourceContext() const {
  return resource_context_.get();
}

net::URLRequestContext* ProfileIOData::GetMainRequestContext() const {
  DCHECK(initialized_);
  return main_request_context_.get();
}

net::URLRequestContext* ProfileIOData::GetMediaRequestContext() const {
  DCHECK(initialized_);
  net::URLRequestContext* context = AcquireMediaRequestContext();
  DCHECK(context);
  return context;
}

net::URLRequestContext* ProfileIOData::GetExtensionsRequestContext() const {
  DCHECK(initialized_);
  return extensions_request_context_.get();
}

net::URLRequestContext* ProfileIOData::GetIsolatedAppRequestContext(
    net::URLRequestContext* main_context,
    const StoragePartitionDescriptor& partition_descriptor,
    scoped_ptr<ProtocolHandlerRegistry::JobInterceptorFactory>
        protocol_handler_interceptor,
    content::ProtocolHandlerMap* protocol_handlers,
    content::URLRequestInterceptorScopedVector request_interceptors) const {
  DCHECK(initialized_);
  net::URLRequestContext* context = NULL;
  if (ContainsKey(app_request_context_map_, partition_descriptor)) {
    context = app_request_context_map_[partition_descriptor];
  } else {
    context =
        AcquireIsolatedAppRequestContext(main_context,
                                         partition_descriptor,
                                         protocol_handler_interceptor.Pass(),
                                         protocol_handlers,
                                         request_interceptors.Pass());
    app_request_context_map_[partition_descriptor] = context;
  }
  DCHECK(context);
  return context;
}

net::URLRequestContext* ProfileIOData::GetIsolatedMediaRequestContext(
    net::URLRequestContext* app_context,
    const StoragePartitionDescriptor& partition_descriptor) const {
  DCHECK(initialized_);
  net::URLRequestContext* context = NULL;
  if (ContainsKey(isolated_media_request_context_map_, partition_descriptor)) {
    context = isolated_media_request_context_map_[partition_descriptor];
  } else {
    context = AcquireIsolatedMediaRequestContext(app_context,
                                                 partition_descriptor);
    isolated_media_request_context_map_[partition_descriptor] = context;
  }
  DCHECK(context);
  return context;
}

extensions::InfoMap* ProfileIOData::GetExtensionInfoMap() const {
  DCHECK(initialized_) << "ExtensionSystem not initialized";
#if defined(ENABLE_EXTENSIONS)
  return extension_info_map_.get();
#else
  return nullptr;
#endif
}

extensions::ExtensionThrottleManager*
ProfileIOData::GetExtensionThrottleManager() const {
  DCHECK(initialized_) << "ExtensionSystem not initialized";
#if defined(ENABLE_EXTENSIONS)
  return extension_throttle_manager_.get();
#else
  return nullptr;
#endif
}

content_settings::CookieSettings* ProfileIOData::GetCookieSettings() const {
  // Allow either Init() or SetCookieSettingsForTesting() to initialize.
  DCHECK(initialized_ || cookie_settings_.get());
  return cookie_settings_.get();
}

HostContentSettingsMap* ProfileIOData::GetHostContentSettingsMap() const {
  DCHECK(initialized_);
  return host_content_settings_map_.get();
}

ResourceContext::SaltCallback ProfileIOData::GetMediaDeviceIDSalt() const {
  return base::Bind(&MediaDeviceIDSalt::GetSalt, media_device_id_salt_);
}

bool ProfileIOData::IsOffTheRecord() const {
  return profile_type() == Profile::INCOGNITO_PROFILE
      || profile_type() == Profile::GUEST_PROFILE;
}

void ProfileIOData::InitializeMetricsEnabledStateOnUIThread() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
#if defined(OS_CHROMEOS)
  // Just fetch the value from ChromeOS' settings while we're on the UI thread.
  // TODO(stevet): For now, this value is only set on profile initialization.
  // We will want to do something similar to the PrefMember method below in the
  // future to more accurately capture this state.
  chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
                                            &enable_metrics_);
#elif defined(OS_ANDROID)
  // TODO(dwkang): rename or unify the pref for UMA once we have conclusion
  // in crbugs.com/246495.
  // Android has it's own preferences for metrics / crash uploading.
  enable_metrics_.Init(prefs::kCrashReportingEnabled,
                       g_browser_process->local_state());
  enable_metrics_.MoveToThread(
      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
#else
  // Prep the PrefMember and send it to the IO thread, since this value will be
  // read from there.
  enable_metrics_.Init(prefs::kMetricsReportingEnabled,
                       g_browser_process->local_state());
  enable_metrics_.MoveToThread(
      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
#endif  // defined(OS_CHROMEOS)
}

bool ProfileIOData::GetMetricsEnabledStateOnIOThread() const {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
#if defined(OS_CHROMEOS)
  return enable_metrics_;
#else
  return enable_metrics_.GetValue();
#endif  // defined(OS_CHROMEOS)
}

bool ProfileIOData::IsDataReductionProxyEnabled() const {
  return data_reduction_proxy_io_data() &&
      data_reduction_proxy_io_data()->IsEnabled();
}

void ProfileIOData::set_data_reduction_proxy_io_data(
    scoped_ptr<data_reduction_proxy::DataReductionProxyIOData>
        data_reduction_proxy_io_data) const {
  data_reduction_proxy_io_data_ = data_reduction_proxy_io_data.Pass();
}

base::WeakPtr<net::HttpServerProperties>
ProfileIOData::http_server_properties() const {
  return http_server_properties_->GetWeakPtr();
}

void ProfileIOData::set_http_server_properties(
    scoped_ptr<net::HttpServerProperties> http_server_properties) const {
  http_server_properties_ = http_server_properties.Pass();
}

ProfileIOData::ResourceContext::ResourceContext(ProfileIOData* io_data)
    : io_data_(io_data),
      host_resolver_(NULL),
      request_context_(NULL) {
  DCHECK(io_data);
}

ProfileIOData::ResourceContext::~ResourceContext() {}

net::HostResolver* ProfileIOData::ResourceContext::GetHostResolver()  {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  DCHECK(io_data_->initialized_);
  return host_resolver_;
}

net::URLRequestContext* ProfileIOData::ResourceContext::GetRequestContext()  {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  DCHECK(io_data_->initialized_);
  return request_context_;
}

scoped_ptr<net::ClientCertStore>
ProfileIOData::ResourceContext::CreateClientCertStore() {
  if (!io_data_->client_cert_store_factory_.is_null())
    return io_data_->client_cert_store_factory_.Run();
#if defined(OS_CHROMEOS)
  return scoped_ptr<net::ClientCertStore>(new net::ClientCertStoreChromeOS(
      make_scoped_ptr(new chromeos::ClientCertFilterChromeOS(
          io_data_->use_system_key_slot(), io_data_->username_hash())),
      base::Bind(&CreateCryptoModuleBlockingPasswordDelegate,
                 chrome::kCryptoModulePasswordClientAuth)));
#elif defined(USE_NSS_CERTS)
  return scoped_ptr<net::ClientCertStore>(new net::ClientCertStoreNSS(
      base::Bind(&CreateCryptoModuleBlockingPasswordDelegate,
                 chrome::kCryptoModulePasswordClientAuth)));
#elif defined(OS_WIN)
  return scoped_ptr<net::ClientCertStore>(new net::ClientCertStoreWin());
#elif defined(OS_MACOSX)
  return scoped_ptr<net::ClientCertStore>(new net::ClientCertStoreMac());
#elif defined(USE_OPENSSL)
  // OpenSSL does not use the ClientCertStore infrastructure. On Android client
  // cert matching is done by the OS as part of the call to show the cert
  // selection dialog.
  return scoped_ptr<net::ClientCertStore>();
#else
#error Unknown platform.
#endif
}

void ProfileIOData::ResourceContext::CreateKeygenHandler(
    uint32 key_size_in_bits,
    const std::string& challenge_string,
    const GURL& url,
    const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback) {
  DCHECK(!callback.is_null());
#if defined(USE_NSS_CERTS)
  scoped_ptr<net::KeygenHandler> keygen_handler(
      new net::KeygenHandler(key_size_in_bits, challenge_string, url));

  base::Callback<void(scoped_ptr<ChromeNSSCryptoModuleDelegate>)>
      got_delegate_callback = base::Bind(&InitializeAndPassKeygenHandler,
                                         base::Passed(&keygen_handler),
                                         callback);

  ChromeNSSCryptoModuleDelegate::CreateForResourceContext(
      chrome::kCryptoModulePasswordKeygen,
      net::HostPortPair::FromURL(url),
      this,
      got_delegate_callback);
#else
  callback.Run(make_scoped_ptr(
      new net::KeygenHandler(key_size_in_bits, challenge_string, url)));
#endif
}

ResourceContext::SaltCallback
ProfileIOData::ResourceContext::GetMediaDeviceIDSalt() {
  return io_data_->GetMediaDeviceIDSalt();
}

// static
std::string ProfileIOData::GetSSLSessionCacheShard() {
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  // The SSL session cache is partitioned by setting a string. This returns a
  // unique string to partition the SSL session cache. Each time we create a
  // new profile, we'll get a fresh SSL session cache which is separate from
  // the other profiles.
  static unsigned ssl_session_cache_instance = 0;
  return base::StringPrintf("profile/%u", ssl_session_cache_instance++);
}

void ProfileIOData::Init(
    content::ProtocolHandlerMap* protocol_handlers,
    content::URLRequestInterceptorScopedVector request_interceptors) const {
  // The basic logic is implemented here. The specific initialization
  // is done in InitializeInternal(), implemented by subtypes. Static helper
  // functions have been provided to assist in common operations.
  DCHECK_CURRENTLY_ON(BrowserThread::IO);
  DCHECK(!initialized_);

  // TODO(jhawkins): Remove once crbug.com/102004 is fixed.
  CHECK(initialized_on_UI_thread_);

  // TODO(jhawkins): Return to DCHECK once crbug.com/102004 is fixed.
  CHECK(profile_params_.get());

  IOThread* const io_thread = profile_params_->io_thread;
  IOThread::Globals* const io_thread_globals = io_thread->globals();
  const base::CommandLine& command_line =
      *base::CommandLine::ForCurrentProcess();

  // Create the common request contexts.
  main_request_context_.reset(new net::URLRequestContext());
  extensions_request_context_.reset(new net::URLRequestContext());

  scoped_ptr<ChromeNetworkDelegate> network_delegate(
      new ChromeNetworkDelegate(
#if defined(ENABLE_EXTENSIONS)
          io_thread_globals->extension_event_router_forwarder.get(),
#else
          NULL,
#endif
          &enable_referrers_));
#if defined(ENABLE_EXTENSIONS)
  network_delegate->set_extension_info_map(
      profile_params_->extension_info_map.get());
  if (!command_line.HasSwitch(switches::kDisableExtensionsHttpThrottling)) {
    extension_throttle_manager_.reset(
        new extensions::ExtensionThrottleManager());
  }
#endif

#if defined(ENABLE_CONFIGURATION_POLICY)
  network_delegate->set_url_blacklist_manager(url_blacklist_manager_.get());
#endif
  network_delegate->set_profile(profile_params_->profile);
  network_delegate->set_profile_path(profile_params_->path);
  network_delegate->set_cookie_settings(profile_params_->cookie_settings.get());
  network_delegate->set_enable_do_not_track(&enable_do_not_track_);
  network_delegate->set_force_google_safe_search(&force_google_safesearch_);
  network_delegate->set_force_youtube_safety_mode(&force_youtube_safety_mode_);

  // NOTE: Proxy service uses the default io thread network delegate, not the
  // delegate just created.
  proxy_service_.reset(
      ProxyServiceFactory::CreateProxyService(
          io_thread->net_log(),
          io_thread_globals->proxy_script_fetcher_context.get(),
          io_thread_globals->system_network_delegate.get(),
          profile_params_->proxy_config_service.release(),
          command_line,
          quick_check_enabled_.GetValue()));
  transport_security_state_.reset(new net::TransportSecurityState());
  base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
  transport_security_persister_.reset(
      new net::TransportSecurityPersister(
          transport_security_state_.get(),
          profile_params_->path,
          pool->GetSequencedTaskRunnerWithShutdownBehavior(
              pool->GetSequenceToken(),
              base::SequencedWorkerPool::BLOCK_SHUTDOWN),
          IsOffTheRecord()));

  certificate_report_sender_.reset(new net::CertificateReportSender(
      main_request_context_.get(),
      net::CertificateReportSender::DO_NOT_SEND_COOKIES));
  transport_security_state_->SetReportSender(certificate_report_sender_.get());

  // Take ownership over these parameters.
  cookie_settings_ = profile_params_->cookie_settings;
  host_content_settings_map_ = profile_params_->host_content_settings_map;
#if defined(ENABLE_EXTENSIONS)
  extension_info_map_ = profile_params_->extension_info_map;
#endif

  resource_context_->host_resolver_ = io_thread_globals->host_resolver.get();
  resource_context_->request_context_ = main_request_context_.get();

  if (profile_params_->resource_prefetch_predictor_observer_) {
    resource_prefetch_predictor_observer_.reset(
        profile_params_->resource_prefetch_predictor_observer_.release());
  }

#if defined(ENABLE_SUPERVISED_USERS)
  supervised_user_url_filter_ = profile_params_->supervised_user_url_filter;
#endif

#if defined(OS_CHROMEOS)
  username_hash_ = profile_params_->username_hash;
  use_system_key_slot_ = profile_params_->use_system_key_slot;
  if (use_system_key_slot_)
    EnableNSSSystemKeySlotForResourceContext(resource_context_.get());
#endif

  if (g_cert_verifier_for_testing) {
    main_request_context_->set_cert_verifier(g_cert_verifier_for_testing);
  } else {
#if defined(OS_CHROMEOS)
    crypto::ScopedPK11Slot public_slot =
        crypto::GetPublicSlotForChromeOSUser(username_hash_);
    // The private slot won't be ready by this point. It shouldn't be necessary
    // for cert trust purposes anyway.
    scoped_refptr<net::CertVerifyProc> verify_proc(
        new chromeos::CertVerifyProcChromeOS(public_slot.Pass()));
    if (policy_cert_verifier_) {
      DCHECK_EQ(policy_cert_verifier_, cert_verifier_.get());
      policy_cert_verifier_->InitializeOnIOThread(verify_proc);
    } else {
      cert_verifier_.reset(
          new net::MultiThreadedCertVerifier(verify_proc.get()));
    }
    main_request_context_->set_cert_verifier(cert_verifier_.get());
#else
    main_request_context_->set_cert_verifier(
        io_thread_globals->cert_verifier.get());
#endif
  }

  // Install the New Tab Page Interceptor.
  if (profile_params_->new_tab_page_interceptor.get()) {
    request_interceptors.push_back(
        profile_params_->new_tab_page_interceptor.release());
  }

  InitializeInternal(
      network_delegate.Pass(), profile_params_.get(),
      protocol_handlers, request_interceptors.Pass());

  profile_params_.reset();
  initialized_ = true;
}

void ProfileIOData::ApplyProfileParamsToContext(
    net::URLRequestContext* context) const {
  context->set_http_user_agent_settings(
      chrome_http_user_agent_settings_.get());
  context->set_ssl_config_service(profile_params_->ssl_config_service.get());
}

scoped_ptr<net::URLRequestJobFactory> ProfileIOData::SetUpJobFactoryDefaults(
    scoped_ptr<net::URLRequestJobFactoryImpl> job_factory,
    content::URLRequestInterceptorScopedVector request_interceptors,
    scoped_ptr<ProtocolHandlerRegistry::JobInterceptorFactory>
        protocol_handler_interceptor,
    net::NetworkDelegate* network_delegate,
    net::FtpTransactionFactory* ftp_transaction_factory) const {
  // NOTE(willchan): Keep these protocol handlers in sync with
  // ProfileIOData::IsHandledProtocol().
  bool set_protocol = job_factory->SetProtocolHandler(
      url::kFileScheme,
      new net::FileProtocolHandler(
          content::BrowserThread::GetBlockingPool()->
              GetTaskRunnerWithShutdownBehavior(
                  base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
  DCHECK(set_protocol);

#if defined(ENABLE_EXTENSIONS)
  DCHECK(extension_info_map_.get());
  // Check only for incognito (and not Chrome OS guest mode GUEST_PROFILE).
  bool is_incognito = profile_type() == Profile::INCOGNITO_PROFILE;
  set_protocol = job_factory->SetProtocolHandler(
      extensions::kExtensionScheme,
      extensions::CreateExtensionProtocolHandler(is_incognito,
                                                 extension_info_map_.get()));
  DCHECK(set_protocol);
  set_protocol = job_factory->SetProtocolHandler(
      extensions::kExtensionResourceScheme,
      CreateExtensionResourceProtocolHandler());
  DCHECK(set_protocol);
#endif
  set_protocol = job_factory->SetProtocolHandler(
      url::kDataScheme, new net::DataProtocolHandler());
  DCHECK(set_protocol);
#if defined(OS_CHROMEOS)
  if (profile_params_) {
    set_protocol = job_factory->SetProtocolHandler(
        content::kExternalFileScheme,
        new chromeos::ExternalFileProtocolHandler(profile_params_->profile));
    DCHECK(set_protocol);
  }
#endif  // defined(OS_CHROMEOS)
#if defined(OS_ANDROID)
  set_protocol = job_factory->SetProtocolHandler(
      url::kContentScheme,
      content::ContentProtocolHandler::Create(
          content::BrowserThread::GetBlockingPool()->
              GetTaskRunnerWithShutdownBehavior(
                  base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
#endif

  job_factory->SetProtocolHandler(
      url::kAboutScheme, new chrome_browser_net::AboutProtocolHandler());
#if !defined(DISABLE_FTP_SUPPORT)
  DCHECK(ftp_transaction_factory);
  job_factory->SetProtocolHandler(
      url::kFtpScheme,
      new net::FtpProtocolHandler(ftp_transaction_factory));
#endif  // !defined(DISABLE_FTP_SUPPORT)

#if defined(DEBUG_DEVTOOLS)
  request_interceptors.push_back(new DebugDevToolsInterceptor);
#endif

  // Set up interceptors in the reverse order.
  scoped_ptr<net::URLRequestJobFactory> top_job_factory = job_factory.Pass();
  for (content::URLRequestInterceptorScopedVector::reverse_iterator i =
           request_interceptors.rbegin();
       i != request_interceptors.rend();
       ++i) {
    top_job_factory.reset(new net::URLRequestInterceptingJobFactory(
        top_job_factory.Pass(), make_scoped_ptr(*i)));
  }
  request_interceptors.weak_clear();

  if (protocol_handler_interceptor) {
    protocol_handler_interceptor->Chain(top_job_factory.Pass());
    return protocol_handler_interceptor.Pass();
  } else {
    return top_job_factory.Pass();
  }
}

void ProfileIOData::ShutdownOnUIThread(
    scoped_ptr<ChromeURLRequestContextGetterVector> context_getters) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  google_services_user_account_id_.Destroy();
  enable_referrers_.Destroy();
  enable_do_not_track_.Destroy();
  force_google_safesearch_.Destroy();
  force_youtube_safety_mode_.Destroy();
#if !defined(OS_CHROMEOS)
  enable_metrics_.Destroy();
#endif
  safe_browsing_enabled_.Destroy();
  sync_disabled_.Destroy();
  signin_allowed_.Destroy();
  network_prediction_options_.Destroy();
  quick_check_enabled_.Destroy();
  if (media_device_id_salt_.get())
    media_device_id_salt_->ShutdownOnUIThread();
  session_startup_pref_.Destroy();
#if defined(ENABLE_CONFIGURATION_POLICY)
  if (url_blacklist_manager_)
    url_blacklist_manager_->ShutdownOnUIThread();
#endif
  if (chrome_http_user_agent_settings_)
    chrome_http_user_agent_settings_->CleanupOnUIThread();
  incognito_availibility_pref_.Destroy();

  if (!context_getters->empty()) {
    if (BrowserThread::IsMessageLoopValid(BrowserThread::IO)) {
      BrowserThread::PostTask(
          BrowserThread::IO, FROM_HERE,
          base::Bind(&NotifyContextGettersOfShutdownOnIO,
              base::Passed(&context_getters)));
    }
  }

  bool posted = BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, this);
  if (!posted)
    delete this;
}

void ProfileIOData::set_channel_id_service(
    net::ChannelIDService* channel_id_service) const {
  channel_id_service_.reset(channel_id_service);
}

void ProfileIOData::DestroyResourceContext() {
  resource_context_.reset();
}

scoped_ptr<net::HttpCache> ProfileIOData::CreateMainHttpFactory(
    const ProfileParams* profile_params,
    net::HttpCache::BackendFactory* main_backend) const {
  net::HttpNetworkSession::Params params;
  net::URLRequestContext* context = main_request_context();

  IOThread* const io_thread = profile_params->io_thread;

  io_thread->InitializeNetworkSessionParams(&params);

  params.host_resolver = context->host_resolver();
  params.cert_verifier = context->cert_verifier();
  params.channel_id_service = context->channel_id_service();
  params.transport_security_state = context->transport_security_state();
  params.cert_transparency_verifier = context->cert_transparency_verifier();
  params.proxy_service = context->proxy_service();
  params.ssl_session_cache_shard = GetSSLSessionCacheShard();
  params.ssl_config_service = context->ssl_config_service();
  params.http_auth_handler_factory = context->http_auth_handler_factory();
  params.network_delegate = context->network_delegate();
  params.http_server_properties = context->http_server_properties();
  params.net_log = context->net_log();
  if (data_reduction_proxy_io_data_.get())
    params.proxy_delegate = data_reduction_proxy_io_data_->proxy_delegate();

  net::HttpNetworkSession* session = new net::HttpNetworkSession(params);
  return scoped_ptr<net::HttpCache>(new net::HttpCache(
      new DevToolsNetworkTransactionFactory(
          network_controller_handle_.GetController(), session),
      context->net_log(), main_backend));
}

scoped_ptr<net::HttpCache> ProfileIOData::CreateHttpFactory(
    net::HttpNetworkSession* shared_session,
    net::HttpCache::BackendFactory* backend) const {
  return scoped_ptr<net::HttpCache>(new net::HttpCache(
      new DevToolsNetworkTransactionFactory(
          network_controller_handle_.GetController(), shared_session),
      shared_session->net_log(), backend));
}

void ProfileIOData::SetCookieSettingsForTesting(
    content_settings::CookieSettings* cookie_settings) {
  DCHECK(!cookie_settings_.get());
  cookie_settings_ = cookie_settings;
}