Provide a vsync notification to the renderer

cc/layer_tree_host_impl_unittest.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 <cmath>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 73 matching lines @@
         m_hostImpl->setViewportSize(gfx::Size(10, 10), gfx::Size(10, 10));
     }
 
     virtual void TearDown()
     {
     }
 
     virtual void didLoseOutputSurfaceOnImplThread() OVERRIDE { }
     virtual void onSwapBuffersCompleteOnImplThread() OVERRIDE { }
     virtual void onVSyncParametersChanged(base::TimeTicks, base::TimeDelta) OVERRIDE { }
+    virtual void didVSync(base::TimeTicks) OVERRIDE { }
     virtual void onCanDrawStateChanged(bool canDraw) OVERRIDE { m_onCanDrawStateChangedCalled = true; }
     virtual void onHasPendingTreeStateChanged(bool hasPendingTree) OVERRIDE { m_hasPendingTree = hasPendingTree; }
     virtual void setNeedsRedrawOnImplThread() OVERRIDE { m_didRequestRedraw = true; }
     virtual void didUploadVisibleHighResolutionTileOnImplThread() OVERRIDE { m_didUploadVisibleHighResolutionTile = true; }
     virtual void setNeedsCommitOnImplThread() OVERRIDE { m_didRequestCommit = true; }
     virtual void setNeedsManageTilesOnImplThread() OVERRIDE { }
     virtual void postAnimationEventsToMainThreadOnImplThread(scoped_ptr<AnimationEventsVector>, base::Time wallClockTime) OVERRIDE { }
     virtual bool reduceContentsTextureMemoryOnImplThread(size_t limitBytes, int priorityCutoff) OVERRIDE { return m_reduceMemoryResult; }
     virtual void reduceWastedContentsTextureMemoryOnImplThread() OVERRIDE { }
     virtual void sendManagedMemoryStats() OVERRIDE { }
@@ skipping 4230 matching lines @@
         m_hostImpl->didDrawAllLayers(frame);
     }
 }
 
 INSTANTIATE_TEST_CASE_P(LayerTreeHostImplTests,
                         LayerTreeHostImplTest,
                         ::testing::Values(false, true));
 
 }  // namespace
 }  // namespace cc