cc: Hook vsync time source to output surface

cc/test/fake_output_surface.cc

 // Copyright 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.
 
 #include "cc/test/fake_output_surface.h"
 
+#include "base/time.h"
+#include "cc/output/output_surface_client.h"
+
 namespace cc {
 
 FakeOutputSurface::FakeOutputSurface(
     scoped_ptr<WebKit::WebGraphicsContext3D> context3d, bool has_parent)
     : OutputSurface(context3d.Pass()),
-      num_sent_frames_(0) {
+      num_sent_frames_(0),
+      vsync_notification_enabled_(false) {
   capabilities_.has_parent_compositor = has_parent;
 }
 
 FakeOutputSurface::FakeOutputSurface(
     scoped_ptr<SoftwareOutputDevice> software_device, bool has_parent)
     : OutputSurface(software_device.Pass()),
       num_sent_frames_(0) {
   capabilities_.has_parent_compositor = has_parent;
 }
 
 FakeOutputSurface::~FakeOutputSurface() {}
 
 bool FakeOutputSurface::BindToClient(
     cc::OutputSurfaceClient* client) {
   DCHECK(client);
   client_ = client;
   if (!context3d_)
     return true;
   return context3d_->makeContextCurrent();
 }
 
 void FakeOutputSurface::SendFrameToParentCompositor(
     CompositorFrame* frame) {
   frame->AssignTo(&last_sent_frame_);
   ++num_sent_frames_;
 }
 
+void FakeOutputSurface::EnableVSyncNotification(bool enable) {
+  vsync_notification_enabled_ = enable;
+}
+
+void FakeOutputSurface::DidVSync(base::TimeTicks frame_time) {
+  client_->DidVSync(frame_time);
+}
+
 }  // namespace cc