cc: Plumbing for impl thread micro benchmarks

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_