cc: Plumbing for impl thread micro benchmarks

cc/debug/micro_benchmark_controller.h

 // Copyright 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 CC_DEBUG_MICRO_BENCHMARK_CONTROLLER_H_
 #define CC_DEBUG_MICRO_BENCHMARK_CONTROLLER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/debug/micro_benchmark.h"
 
 namespace base {
 class Value;
+class MessageLoopProxy;
 }  // namespace base
 
 namespace cc {
 
 class LayerTreeHost;
-class Layer;
-class PictureLayer;
-class MicroBenchmarkController {
+class LayerTreeHostImpl;
+class CC_EXPORT MicroBenchmarkController {
  public:
   explicit MicroBenchmarkController(LayerTreeHost* host);
   ~MicroBenchmarkController();
 
   void DidUpdateLayers();
 
   bool ScheduleRun(const std::string& micro_benchmark_name,
                    scoped_ptr<base::Value> value,
                    const MicroBenchmark::DoneCallback& callback);
 
+  void ScheduleImplBenchmarks(LayerTreeHostImpl* host_impl);
+
  private:
   void CleanUpFinishedBenchmarks();
 
   LayerTreeHost* host_;
   ScopedPtrVector<MicroBenchmark> benchmarks_;
+  scoped_refptr<base::MessageLoopProxy> main_controller_message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(MicroBenchmarkController);
 };
 
 }  // namespace cc
 
 #endif  // CC_DEBUG_MICRO_BENCHMARK_CONTROLLER_H_