cc: Make scheduling be driven by vsync for android webview.

content/browser/android/in_process/synchronous_compositor_impl.h

 // Copyright 2013 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 CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 55 matching lines @@
       const gfx::Transform& transform,
       gfx::Rect viewport,
       gfx::Rect clip,
       gfx::Rect viewport_rect_for_tile_priority,
       const gfx::Transform& transform_for_tile_priority) override;
   virtual bool DemandDrawSw(SkCanvas* canvas) override;
   virtual void ReturnResources(
       const cc::CompositorFrameAck& frame_ack) override;
   virtual void SetMemoryPolicy(size_t bytes_limit) override;
   virtual void DidChangeRootLayerScrollOffset() override;
+  virtual void OnVSync(base::TimeTicks frame_time, 
+      base::TimeDelta vsync_period) override;
 
   // LayerScrollOffsetDelegate
   virtual gfx::ScrollOffset GetTotalScrollOffset() override;
   virtual void UpdateRootLayerState(
       const gfx::ScrollOffset& total_scroll_offset,
       const gfx::ScrollOffset& max_scroll_offset,
       const gfx::SizeF& scrollable_size,
       float page_scale_factor,
       float min_page_scale_factor,
       float max_page_scale_factor) override;
   virtual bool IsExternalFlingActive() const override;
 
   void SetInputHandler(cc::InputHandler* input_handler);
   void DidOverscroll(const DidOverscrollParams& params);
   void DidStopFlinging();
 
  private:
   friend class WebContentsUserData<SynchronousCompositorImpl>;
   friend class SynchronousCompositor;
   explicit SynchronousCompositorImpl(WebContents* contents);
   virtual ~SynchronousCompositorImpl();
 
   void SetClient(SynchronousCompositorClient* compositor_client);
   void UpdateFrameMetaData(const cc::CompositorFrameMetadata& frame_info);
   void NotifyDidDestroyCompositorToClient();
+  void DidInvalidateOutputSurface();
   void DidActivatePendingTree();
   void DeliverMessages();
   bool CalledOnValidThread() const;
 
   SynchronousCompositorClient* compositor_client_;
   SynchronousCompositorOutputSurface* output_surface_;
   SynchronousCompositorExternalBeginFrameSource* begin_frame_source_;
   WebContents* contents_;
   const int routing_id_;
   cc::InputHandler* input_handler_;
   bool invoking_composite_;
 
   base::WeakPtrFactory<SynchronousCompositorImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_