Refactor MutatorHostClient from LayerTreeHost to LayerTree.

cc/debug/rasterize_and_record_benchmark.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_RASTERIZE_AND_RECORD_BENCHMARK_H_
 #define CC_DEBUG_RASTERIZE_AND_RECORD_BENCHMARK_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/time/time.h"
 #include "cc/debug/micro_benchmark_controller.h"
 #include "cc/playback/recording_source.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace cc {
 
-class LayerTreeHost;
+class LayerTree;
 class Layer;
 
 class RasterizeAndRecordBenchmark : public MicroBenchmark {
  public:
   explicit RasterizeAndRecordBenchmark(
       std::unique_ptr<base::Value> value,
       const MicroBenchmark::DoneCallback& callback);
   ~RasterizeAndRecordBenchmark() override;
 
   // Implements MicroBenchmark interface.
-  void DidUpdateLayers(LayerTreeHost* host) override;
+  void DidUpdateLayers(LayerTree* layer_tree) override;
   void RunOnLayer(PictureLayer* layer) override;
 
   std::unique_ptr<MicroBenchmarkImpl> CreateBenchmarkImpl(
       scoped_refptr<base::SingleThreadTaskRunner> origin_task_runner) override;
 
  private:
   void RecordRasterResults(std::unique_ptr<base::Value> results);
 
   struct RecordResults {
     RecordResults();
     ~RecordResults();
 
     int pixels_recorded;
     size_t bytes_used;
     base::TimeDelta total_best_time[RecordingSource::RECORDING_MODE_COUNT];
   };
 
   RecordResults record_results_;
   int record_repeat_count_;
   std::unique_ptr<base::Value> settings_;
   std::unique_ptr<base::DictionaryValue> results_;
 
   // The following is used in DCHECKs.
   bool main_thread_benchmark_done_;
 
-  LayerTreeHost* host_;
+  LayerTree* layer_tree_;
 
   base::WeakPtrFactory<RasterizeAndRecordBenchmark> weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_DEBUG_RASTERIZE_AND_RECORD_BENCHMARK_H_