Support distributing vsync info with surfaces.

content/browser/compositor/surface_display_output_surface.h

 // Copyright 2014 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_COMPOSITOR_SURFACE_DISPLAY_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_COMPOSITOR_SURFACE_DISPLAY_OUTPUT_SURFACE_H_
 
 #include "cc/output/output_surface.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_factory_client.h"
@@ skipping 14 matching lines @@
  public:
   // The underlying cc::Display and cc::SurfaceManager must outlive this class.
   SurfaceDisplayOutputSurface(
       cc::SurfaceManager* surface_manager,
       uint32_t surface_id_namespace,
       const scoped_refptr<cc::ContextProvider>& context_provider);
   virtual ~SurfaceDisplayOutputSurface();
 
   void set_display(cc::Display* display) { display_ = display; }
   cc::SurfaceFactory* factory() { return &factory_; }
+  void ReceivedVSyncParameters(base::TimeTicks timebase,
+                               base::TimeDelta interval);
 
   // cc::OutputSurface implementation.
   virtual void SwapBuffers(cc::CompositorFrame* frame) OVERRIDE;
 
   // cc::SurfaceFactoryClient implementation.
   virtual void ReturnResources(
       const cc::ReturnedResourceArray& resources) OVERRIDE;
 
  private:
   void SwapBuffersComplete();
 
   cc::Display* display_;
   cc::SurfaceManager* surface_manager_;
   cc::SurfaceFactory factory_;
   gfx::Size display_size_;
   cc::SurfaceId surface_id_;
   cc::SurfaceIdAllocator allocator_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceDisplayOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_SURFACE_DISPLAY_OUTPUT_SURFACE_H_