Provide a vsync notification to the renderer

cc/layer_tree_host_impl.cc

 // Copyright 2011 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/layer_tree_host_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
@@ skipping 220 matching lines @@
         return false;
     }
     return true;
 }
 
 OutputSurface* LayerTreeHostImpl::outputSurface() const
 {
     return m_outputSurface.get();
 }
 
+void LayerTreeHostImpl::enableVSyncNotification(bool enable)
+{
+    m_outputSurface->EnableVSyncNotification(enable);
+}
+
 void LayerTreeHostImpl::animate(base::TimeTicks monotonicTime, base::Time wallClockTime)
 {
     animatePageScale(monotonicTime);
     animateLayers(monotonicTime, wallClockTime);
     animateScrollbars(monotonicTime);
     if (m_topControlsManager)
         m_topControlsManager->Animate(monotonicTime);
 }
 
 void LayerTreeHostImpl::manageTiles()
@@ skipping 495 matching lines @@
 
 void LayerTreeHostImpl::OnSendFrameToParentCompositorAck(const CompositorFrameAck& ack)
 {
     if (!m_renderer)
         return;
 
     // TODO(piman): We may need to do some validation on this ack before processing it.
     m_renderer->receiveCompositorFrameAck(ack);
 }
 
+void LayerTreeHostImpl::DidVSync(base::TimeTicks frameTime)
+{
+    m_client->didVSync(frameTime);
+}
+
 void LayerTreeHostImpl::OnCanDrawStateChangedForTree(LayerTreeImpl*)
 {
     m_client->onCanDrawStateChanged(canDraw());
 }
 
 CompositorFrameMetadata LayerTreeHostImpl::makeCompositorFrameMetadata() const
 {
     CompositorFrameMetadata metadata;
     metadata.page_scale_factor = activeTree()->total_page_scale_factor();
     metadata.viewport_size = activeTree()->ScrollableViewportSize();
@@ skipping 938 matching lines @@
     LayerImpl* layer = getNonCompositedContentLayerRecursive(tree->RootLayer());
     return layer ? layer->getPicture() : skia::RefPtr<SkPicture>();
 }
 
 void LayerTreeHostImpl::savePaintTime(const base::TimeDelta& totalPaintTime)
 {
     m_paintTimeCounter->SavePaintTime(totalPaintTime);
 }
 
 }  // namespace cc