cc:: Add RenderingStatsInstrumentation to manage collection of RenderingStats

cc/delegated_renderer_layer_impl_unittest.cc

Index: cc/delegated_renderer_layer_impl_unittest.cc
diff --git a/cc/delegated_renderer_layer_impl_unittest.cc b/cc/delegated_renderer_layer_impl_unittest.cc
index def29c1550520c388a889014e76ea13f7f83d8da..44cadb682bf532c064fa8317f21d4ada130d4669 100644
--- a/cc/delegated_renderer_layer_impl_unittest.cc
+++ b/cc/delegated_renderer_layer_impl_unittest.cc
@@ -37,7 +37,13 @@ class DelegatedRendererLayerImplTest : public testing::Test {
     LayerTreeSettings settings;
     settings.minimumOcclusionTrackingSize = gfx::Size();
 
-    host_impl_ = LayerTreeHostImpl::Create(settings, &client_, &proxy_);
+    scoped_ptr<RenderingStatsInstrumentation> stats_instrumentation =
+        RenderingStatsInstrumentation::Create();
+
+    host_impl_ = LayerTreeHostImpl::Create(settings,
+                                           &client_,
+                                           &proxy_,
+                                           stats_instrumentation.get());
     host_impl_->InitializeRenderer(createFakeOutputSurface());
     host_impl_->SetViewportSize(gfx::Size(10, 10), gfx::Size(10, 10));
   }