cc: Plumbing for impl thread micro benchmarks

cc/debug/micro_benchmark.cc

Index: cc/debug/micro_benchmark.cc
diff --git a/cc/debug/micro_benchmark.cc b/cc/debug/micro_benchmark.cc
index 1742e7f3d6258f98321cad7034145117f078ab74..464d0cb625dd0ba40ff0774948e98f826613ae5e 100644
--- a/cc/debug/micro_benchmark.cc
+++ b/cc/debug/micro_benchmark.cc
@@ -5,13 +5,18 @@
 #include "cc/debug/micro_benchmark.h"
 
 #include "base/callback.h"
+#include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "base/values.h"
+#include "cc/debug/micro_benchmark_impl.h"
 
 namespace cc {
 
 MicroBenchmark::MicroBenchmark(const DoneCallback& callback)
-    : callback_(callback), is_done_(false) {}
+    : callback_(callback),
+      is_done_(false),
+      processed_for_benchmark_impl_(false) {}
 
 MicroBenchmark::~MicroBenchmark() {}
 
@@ -30,4 +35,20 @@ void MicroBenchmark::RunOnLayer(Layer* layer) {}
 
 void MicroBenchmark::RunOnLayer(PictureLayer* layer) {}
 
+bool MicroBenchmark::ProcessedForBenchmarkImpl() const {
+  return processed_for_benchmark_impl_;
+}
+
+scoped_ptr<MicroBenchmarkImpl> MicroBenchmark::GetBenchmarkImpl(
+    scoped_refptr<base::MessageLoopProxy> origin_loop) {
+  DCHECK(!processed_for_benchmark_impl_);
+  processed_for_benchmark_impl_ = true;
+  return CreateBenchmarkImpl(origin_loop);
+}
+
+scoped_ptr<MicroBenchmarkImpl> MicroBenchmark::CreateBenchmarkImpl(
+    scoped_refptr<base::MessageLoopProxy> origin_loop) {
+  return make_scoped_ptr<MicroBenchmarkImpl>(NULL);
+}
+
 }  // namespace cc