Aura: Have ui::Layer implement WebKit::WebExternalTextureLayerClient

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 1af24875bab73dd4344c31c6eb54fde6ab3133dd..22e29bfa48905da2e3e1d6b1a17079505c345926 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -229,11 +229,13 @@ class RenderWidgetHostViewAura
   bool ShouldMoveToCenter();
 
   // Run the compositing callbacks.
-  void RunCompositingCallbacks();
+  void RunCompositingCallbacks(ui::Compositor* compositor);
 
   // Insert a sync point into the compositor's command stream and acknowledge
   // that we have presented the accelerated surface buffer.
-  void InsertSyncPointAndACK(int32 route_id, int gpu_host_id);
+  static void InsertSyncPointAndACK(int32 route_id,
+                                    int gpu_host_id,
+                                    ui::Compositor* compositor);
 
   // Called when window_ is removed from the window tree.
   void RemovingFromRootWindow();
@@ -295,7 +297,7 @@ class RenderWidgetHostViewAura
   // Current tooltip text.
   string16 tooltip_;
 
-  std::vector< base::Callback<void(void)> >
+  std::vector< base::Callback<void(ui::Compositor*)> >
       on_compositing_will_start_callbacks_;
 
   std::map<uint64, scoped_refptr<ImageTransportClient> >