cc: Save correct frame begin time to FrameRateCounter

cc/layer_tree_host.h

 // 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.
 
 #ifndef CC_LAYER_TREE_HOST_H_
 #define CC_LAYER_TREE_HOST_H_
 
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 100 matching lines @@
     void didCommitAndDrawFrame() { m_client->didCommitAndDrawFrame(); }
     void didCompleteSwapBuffers() { m_client->didCompleteSwapBuffers(); }
     void deleteContentsTexturesOnImplThread(ResourceProvider*);
     virtual void acquireLayerTextures();
     // Returns false if we should abort this frame due to initialization failure.
     bool initializeRendererIfNeeded();
     void updateLayers(ResourceUpdateQueue&, size_t contentsMemoryLimitBytes);
 
     LayerTreeHostClient* client() { return m_client; }
 
-    void composite();
+    void composite(base::TimeTicks frameBeginTime);
 
     // Only used when compositing on the main thread.
     void scheduleComposite();
 
     // Composites and attempts to read back the result into the provided
     // buffer. If it wasn't possible, e.g. due to context lost, will return
     // false.
     bool compositeAndReadback(void *pixels, const gfx::Rect&);
 
     void finishAllRendering();
@@ skipping 151 matching lines @@
     size_t m_partialTextureUpdateRequests;
 
     scoped_ptr<AnimationRegistrar> m_animationRegistrar;
 
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYER_TREE_HOST_H_