cc: Add message passing mechanism to micro benchmarking.

cc/debug/unittest_only_benchmark.h

Index: cc/debug/unittest_only_benchmark.h
diff --git a/cc/debug/unittest_only_benchmark.h b/cc/debug/unittest_only_benchmark.h
index 83312859644cf7b55e5fc110c021b7b0d0b3d898..e64a7990eaadca1d9bc82719f418dbcf0f44e1a3 100644
--- a/cc/debug/unittest_only_benchmark.h
+++ b/cc/debug/unittest_only_benchmark.h
@@ -13,10 +13,12 @@ namespace cc {
 class CC_EXPORT UnittestOnlyBenchmark : public MicroBenchmark {
  public:
   UnittestOnlyBenchmark(scoped_ptr<base::Value> value,
-                        const DoneCallback& callback);
+                        const DoneCallback& callback,
+                        int id);
   virtual ~UnittestOnlyBenchmark();
 
   virtual void DidUpdateLayers(LayerTreeHost* host) OVERRIDE;
+  virtual bool SendMessage(scoped_ptr<base::Value> value) OVERRIDE;
 
  protected:
   virtual scoped_ptr<MicroBenchmarkImpl> CreateBenchmarkImpl(
@@ -32,4 +34,3 @@ class CC_EXPORT UnittestOnlyBenchmark : public MicroBenchmark {
 }  // namespace cc
 
 #endif  // CC_DEBUG_UNITTEST_ONLY_BENCHMARK_H_
-