cc: Save correct frame begin time to FrameRateCounter

cc/layer_tree_host_impl.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_IMPL_H_
 #define CC_LAYER_TREE_HOST_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
@@ skipping 118 matching lines @@
   virtual void Animate(base::TimeTicks monotonic_time,
                        base::Time wall_clock_time);
 
   void ManageTiles();
 
   // Returns false if problems occured preparing the frame, and we should try
   // to avoid displaying the frame. If prepareToDraw is called, DidDrawAllLayers
   // must also be called, regardless of whether DrawLayers is called between the
   // two.
   virtual bool PrepareToDraw(FrameData* frame);
-  virtual void DrawLayers(FrameData* frame);
+  virtual void DrawLayers(FrameData* frame, base::TimeTicks frame_begin_time);
   // Must be called if and only if PrepareToDraw was called.
   void DidDrawAllLayers(const FrameData& frame);
 
   const LayerTreeSettings& settings() const { return settings_; }
 
   // RendererClient implementation
  private:
   virtual gfx::Size DeviceViewportSize() const OVERRIDE;
   virtual const LayerTreeSettings& Settings() const OVERRIDE;
  public:
@@ skipping 287 matching lines @@
   base::TimeTicks current_frame_time_;
 
   scoped_ptr<AnimationRegistrar> animation_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYER_TREE_HOST_IMPL_H_