Provide a vsync notification to the renderer

content/renderer/gpu/compositor_output_surface.h

 // Copyright (c) 2012 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_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 28 matching lines @@
                           WebKit::WebGraphicsContext3D* context3d,
                           cc::SoftwareOutputDevice* software);
   virtual ~CompositorOutputSurface();
 
   // cc::OutputSurface implementation.
   virtual bool BindToClient(cc::OutputSurfaceClient* client) OVERRIDE;
   virtual const struct Capabilities& Capabilities() const OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* Context3D() const OVERRIDE;
   virtual cc::SoftwareOutputDevice* SoftwareDevice() const OVERRIDE;
   virtual void SendFrameToParentCompositor(cc::CompositorFrame*) OVERRIDE;
+  virtual void EnableVSyncNotification(bool enable) OVERRIDE;
 
   // TODO(epenner): This seems out of place here and would be a better fit
   // int CompositorThread after it is fully refactored (http://crbug/170828)
   virtual void UpdateSmoothnessTakesPriority(bool prefer_smoothness) OVERRIDE;
 
  private:
   class CompositorOutputSurfaceProxy :
       public base::RefCountedThreadSafe<CompositorOutputSurfaceProxy> {
    public:
     explicit CompositorOutputSurfaceProxy(
         CompositorOutputSurface* output_surface)
         : output_surface_(output_surface) {}
     void ClearOutputSurface() { output_surface_ = NULL; }
     void OnMessageReceived(const IPC::Message& message) {
       if (output_surface_)
         output_surface_->OnMessageReceived(message);
     }
 
    private:
     friend class base::RefCountedThreadSafe<CompositorOutputSurfaceProxy>;
     ~CompositorOutputSurfaceProxy() {}
     CompositorOutputSurface* output_surface_;
 
     DISALLOW_COPY_AND_ASSIGN(CompositorOutputSurfaceProxy);
   };
 
   void OnMessageReceived(const IPC::Message& message);
   void OnUpdateVSyncParameters(
       base::TimeTicks timebase, base::TimeDelta interval);
+  void DidVSync(base::TimeTicks frame_time);
   bool Send(IPC::Message* message);
 
   scoped_refptr<IPC::ForwardingMessageFilter> output_surface_filter_;
   cc::OutputSurfaceClient* client_;
   scoped_refptr<CompositorOutputSurfaceProxy> output_surface_proxy_;
   int routing_id_;
   struct Capabilities capabilities_;
   scoped_ptr<WebKit::WebGraphicsContext3D> context3D_;
   scoped_ptr<cc::SoftwareOutputDevice> software_device_;
   bool prefers_smoothness_;
   base::PlatformThreadId main_thread_id_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_