Add BeginFrameObserverProxy

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 a2c24a18f237fdbbc8e9a4d38b489a15ea7ceb5e..ff5fc1c8ff7201160349781fb40c58ba9701a832 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -474,6 +474,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   void DelegatedFrameHostUpdateVSyncParameters(
       const base::TimeTicks& timebase,
       const base::TimeDelta& interval) override;
+  void DelegatedFrameHostSendBeginFrame(
+      const cc::BeginFrameArgs& args) override;
 
   // Detaches |this| from the input method object.
   void DetachFromInputMethod();
@@ -496,6 +498,9 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   // Helper function to set keyboard focus to the main window.
   void SetKeyboardFocus();
 
+  // Called when RenderWidget want to start BeginFrame scheduling or stop.
+  void OnSetNeedsBeginFrames(bool needs_begin_frames);
+
   RenderFrameHostImpl* GetFocusedFrame();
 
   // The model object.