cc:: Add RenderingStatsInstrumentation to manage collection of RenderingStats

cc/trees/tree_synchronizer_unittest.cc

 // Copyright 2011 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.
 
 #include "cc/trees/tree_synchronizer.h"
 
 #include <algorithm>
 
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/layers/layer.h"
@@ skipping 466 matching lines @@
                                          host_impl_.active_tree());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_impl_.active_tree());
 }
 
 TEST_F(TreeSynchronizerTest, SynchronizeAnimations) {
   LayerTreeSettings settings;
   FakeProxy proxy(scoped_ptr<Thread>(NULL));
   DebugScopedSetImplThread impl(&proxy);
+  scoped_ptr<RenderingStatsInstrumentation> stats_instrumentation =
+      RenderingStatsInstrumentation::Create();
   scoped_ptr<LayerTreeHostImpl> host_impl =
-      LayerTreeHostImpl::Create(settings, NULL, &proxy);
+      LayerTreeHostImpl::Create(settings,
+                                NULL,
+                                &proxy,
+                                stats_instrumentation.get());
 
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
 
   layer_tree_root->SetLayerAnimationController(
       FakeLayerAnimationController::Create());
 
   EXPECT_FALSE(static_cast<FakeLayerAnimationController*>(
       layer_tree_root->layer_animation_controller())->SynchronizedAnimations());
 
   scoped_ptr<LayerImpl> layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          scoped_ptr<LayerImpl>(),
                                          host_impl_.active_tree());
   TreeSynchronizer::PushProperties(layer_tree_root.get(),
                                    layer_impl_tree_root.get());
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_impl_.active_tree());
 
   EXPECT_TRUE(static_cast<FakeLayerAnimationController*>(
       layer_tree_root->layer_animation_controller())->SynchronizedAnimations());
 }
 
 }  // namespace
 }  // namespace cc