Infrastructure for temportarily relinquishing GPU resources.

ui/ozone/platform/dri/dri_gpu_platform_support.h

 // Copyright 2014 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.
 
 #ifndef UI_OZONE_PLATFORM_DRI_DRI_GPU_PLATFORM_SUPPORT_H_
 #define UI_OZONE_PLATFORM_DRI_DRI_GPU_PLATFORM_SUPPORT_H_
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 23 matching lines @@
   DriGpuPlatformSupport(DriSurfaceFactory* dri,
                         DriWindowDelegateManager* window_manager,
                         ScreenManager* screen_manager,
                         scoped_ptr<NativeDisplayDelegateDri> ndd);
   ~DriGpuPlatformSupport() override;
 
   void AddHandler(scoped_ptr<GpuPlatformSupport> handler);
 
   // GpuPlatformSupport:
   void OnChannelEstablished(IPC::Sender* sender) override;
+  void RelinquishGpuResources(const base::Closure& callback) override;
 
   // IPC::Listener:
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
   void OnCreateWindowDelegate(gfx::AcceleratedWidget widget);
   void OnDestroyWindowDelegate(gfx::AcceleratedWidget widget);
   void OnWindowBoundsChanged(gfx::AcceleratedWidget widget,
                              const gfx::Rect& bounds);
   void OnCursorSet(gfx::AcceleratedWidget widget,
@@ skipping 18 matching lines @@
   DriWindowDelegateManager* window_manager_;  // Not owned.
   ScreenManager* screen_manager_;             // Not owned.
 
   scoped_ptr<NativeDisplayDelegateDri> ndd_;
   ScopedVector<GpuPlatformSupport> handlers_;
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_DRI_GPU_PLATFORM_SUPPORT_H_