| // Copyright 2016 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 "components/exo/wm_helper.h" |
| #include "ui/compositor/compositor_vsync_manager.h" |
| |
| namespace exo { |
| |
| namespace { |
| |
| WMHelper* g_instance = nullptr; |
| |
| } // namespace |
| |
| WMHelper::WMHelper() {} |
| |
| WMHelper::~WMHelper() {} |
| |
| // static |
| void WMHelper::SetInstance(WMHelper* helper) { |
| DCHECK_NE(!!helper, !!g_instance); |
| g_instance = helper; |
| } |
| |
| // static |
| WMHelper* WMHelper::GetInstance() { |
| DCHECK(g_instance); |
| return g_instance; |
| } |
| |
| // static |
| bool WMHelper::HasInstance() { |
| return !!g_instance; |
| } |
| |
| } // namespace exo |
