cc: Add message passing mechanism to micro benchmarking.

content/renderer/gpu/render_widget_compositor.h

 // Copyright (c) 2013 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 CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 #define CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
@@ skipping 52 matching lines @@
   // is called on LayerTreeHost, the original latency info will be turned
   // into a LatencyInfoSwapPromise.
   scoped_ptr<cc::SwapPromiseMonitor> CreateLatencyInfoSwapPromiseMonitor(
       ui::LatencyInfo* latency);
   // Calling QueueSwapPromise() to directly queue a SwapPromise into
   // LayerTreeHost.
   void QueueSwapPromise(scoped_ptr<cc::SwapPromise> swap_promise);
   int GetLayerTreeId() const;
   void NotifyInputThrottledUntilCommit();
   const cc::Layer* GetRootLayer() const;
-  bool ScheduleMicroBenchmark(
+  int ScheduleMicroBenchmark(
       const std::string& name,
       scoped_ptr<base::Value> value,
       const base::Callback<void(scoped_ptr<base::Value>)>& callback);
+  bool SendMessageToMicroBenchmark(int id, scoped_ptr<base::Value> value);
 
   // WebLayerTreeView implementation.
   virtual void setSurfaceReady();
   virtual void setRootLayer(const blink::WebLayer& layer);
   virtual void clearRootLayer();
   virtual void setViewportSize(
       const blink::WebSize& unused_deprecated,
       const blink::WebSize& device_viewport_size);
   virtual void setViewportSize(const blink::WebSize& device_viewport_size);
   virtual blink::WebSize layoutViewportSize() const;
@@ skipping 62 matching lines @@
 
   bool threaded_;
   bool suppress_schedule_composite_;
   RenderWidget* widget_;
   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_