cc: Avoid expensive RenderingStats collection.

cc/test/tiled_layer_test_common.h

Index: cc/test/tiled_layer_test_common.h
diff --git a/cc/test/tiled_layer_test_common.h b/cc/test/tiled_layer_test_common.h
index 78d661d11faf9c38c20991c105f4aeb5a5814cd6..954e8cfdde97949f1be8b148b1d4932da9ebcbe2 100644
--- a/cc/test/tiled_layer_test_common.h
+++ b/cc/test/tiled_layer_test_common.h
@@ -28,7 +28,7 @@ public:
         Resource(FakeLayerUpdater*, scoped_ptr<cc::PrioritizedResource>);
         virtual ~Resource();
 
-        virtual void update(cc::ResourceUpdateQueue&, const gfx::Rect&, const gfx::Vector2d&, bool, cc::RenderingStats&) OVERRIDE;
+        virtual void update(cc::ResourceUpdateQueue&, const gfx::Rect&, const gfx::Vector2d&, bool, cc::RenderingStats*) OVERRIDE;
 
     private:
         FakeLayerUpdater* m_layer;
@@ -39,7 +39,7 @@ public:
 
     virtual scoped_ptr<cc::LayerUpdater::Resource> createResource(cc::PrioritizedResourceManager*) OVERRIDE;
 
-    virtual void prepareToUpdate(const gfx::Rect& contentRect, const gfx::Size&, float, float, gfx::Rect& resultingOpaqueRect, cc::RenderingStats&) OVERRIDE;
+    virtual void prepareToUpdate(const gfx::Rect& contentRect, const gfx::Size&, float, float, gfx::Rect& resultingOpaqueRect, cc::RenderingStats*) OVERRIDE;
     // Sets the rect to invalidate during the next call to prepareToUpdate(). After the next
     // call to prepareToUpdate() the rect is reset.
     void setRectToInvalidate(const gfx::Rect&, FakeTiledLayer*);