Infrastructure for temportarily relinquishing GPU resources.

ui/ozone/public/ozone_platform.h

Index: ui/ozone/public/ozone_platform.h
diff --git a/ui/ozone/public/ozone_platform.h b/ui/ozone/public/ozone_platform.h
index c01800c021a4d94094bc047e0f872d6f32c6bd02..54c1e8a675b56e4ee943608bad2a9db20641b9e0 100644
--- a/ui/ozone/public/ozone_platform.h
+++ b/ui/ozone/public/ozone_platform.h
@@ -5,6 +5,7 @@
 #ifndef UI_OZONE_PUBLIC_OZONE_PLATFORM_H_
 #define UI_OZONE_PUBLIC_OZONE_PLATFORM_H_
 
+#include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/ozone/ozone_export.h"
 
@@ -62,6 +63,7 @@ class OZONE_EXPORT OzonePlatform {
       const gfx::Rect& bounds) = 0;
   virtual scoped_ptr<ui::NativeDisplayDelegate>
       CreateNativeDisplayDelegate() = 0;
+  virtual void RelinquishGpuResources(base::Closure callback);
 
  private:
   virtual void InitializeUI() = 0;