Remove parts of //cc we aren't using

cc/debug/micro_benchmark_impl.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_IMPL_H_
-#define CC_DEBUG_MICRO_BENCHMARK_IMPL_H_
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "cc/base/cc_export.h"
-
-namespace base {
-class Value;
-class MessageLoopProxy;
-}  // namespace base
-
-namespace cc {
-
-class LayerTreeHostImpl;
-class LayerImpl;
-class PictureLayerImpl;
-class CC_EXPORT MicroBenchmarkImpl {
- public:
-  typedef base::Callback<void(scoped_ptr<base::Value>)> DoneCallback;
-
-  explicit MicroBenchmarkImpl(
-      const DoneCallback& callback,
-      scoped_refptr<base::MessageLoopProxy> origin_loop);
-  virtual ~MicroBenchmarkImpl();
-
-  bool IsDone() const;
-  virtual void DidCompleteCommit(LayerTreeHostImpl* host);
-
-  virtual void RunOnLayer(LayerImpl* layer);
-  virtual void RunOnLayer(PictureLayerImpl* layer);
-
- protected:
-  void NotifyDone(scoped_ptr<base::Value> result);
-
- private:
-  DoneCallback callback_;
-  bool is_done_;
-  scoped_refptr<base::MessageLoopProxy> origin_loop_;
-};
-
-}  // namespace cc
-
-#endif  // CC_DEBUG_MICRO_BENCHMARK_IMPL_H_