cc: Rename VSync to BeginFrame

cc/test/fake_output_surface.h

Index: cc/test/fake_output_surface.h
diff --git a/cc/test/fake_output_surface.h b/cc/test/fake_output_surface.h
index f7ca21dd16d11044463c856a967efd4794f1730e..a57632332b385d091577da3f6ca31bdde6246e71 100644
--- a/cc/test/fake_output_surface.h
+++ b/cc/test/fake_output_surface.h
@@ -62,11 +62,11 @@ class FakeOutputSurface : public OutputSurface {
   CompositorFrame& last_sent_frame() { return last_sent_frame_; }
   size_t num_sent_frames() { return num_sent_frames_; }
 
-  virtual void EnableVSyncNotification(bool enable) OVERRIDE;
-  bool vsync_notification_enabled() const {
-    return vsync_notification_enabled_;
+  virtual void SetNeedsBeginImplFrame(bool enable) OVERRIDE;
+  bool needs_begin_impl_frame() const {
+    return needs_begin_impl_frame_;
   }
-  void DidVSync(base::TimeTicks frame_time);
+  void BeginImplFrame(base::TimeTicks frame_time);
 
  private:
   FakeOutputSurface(
@@ -81,7 +81,7 @@ class FakeOutputSurface : public OutputSurface {
 
   CompositorFrame last_sent_frame_;
   size_t num_sent_frames_;
-  bool vsync_notification_enabled_;
+  bool needs_begin_impl_frame_;
   base::WeakPtrFactory<FakeOutputSurface> weak_ptr_factory_;
 };