Support distributing vsync info with surfaces.

content/browser/compositor/onscreen_display_client.h

Index: content/browser/compositor/onscreen_display_client.h
diff --git a/content/browser/compositor/onscreen_display_client.h b/content/browser/compositor/onscreen_display_client.h
index 12fac97b458d25c1c24d15d4d9cae87359b7682a..be6b052c921b87885ea0359b2d3590dc94219818 100644
--- a/content/browser/compositor/onscreen_display_client.h
+++ b/content/browser/compositor/onscreen_display_client.h
@@ -18,6 +18,7 @@ class SurfaceManager;
 }
 
 namespace content {
+class SurfaceDisplayOutputSurface;
 
 // This class provides a DisplayClient implementation for drawing directly to an
 // onscreen context.
@@ -30,12 +31,17 @@ class OnscreenDisplayClient : cc::DisplayClient {
   virtual ~OnscreenDisplayClient();
 
   cc::Display* display() { return display_.get(); }
+  void set_surface_output_surface(SurfaceDisplayOutputSurface* surface) {
+    surface_display_output_surface_ = surface;
+  }
 
   // cc::DisplayClient implementation.
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface() OVERRIDE;
   virtual void DisplayDamaged() OVERRIDE;
   virtual void DidSwapBuffers() OVERRIDE;
   virtual void DidSwapBuffersComplete() OVERRIDE;
+  virtual void CommitVSyncParameters(base::TimeTicks timebase,
+                                     base::TimeDelta interval) OVERRIDE;
 
  private:
   void ScheduleDraw();
@@ -44,6 +50,7 @@ class OnscreenDisplayClient : cc::DisplayClient {
   scoped_ptr<cc::OutputSurface> output_surface_;
   scoped_ptr<cc::Display> display_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+  SurfaceDisplayOutputSurface* surface_display_output_surface_;
   bool scheduled_draw_;
   // True if a draw should be scheduled, but it's hit the limit on max frames
   // pending.