cc: Switch RenderingStats collection in Layer::Update() to RenderingStatsInstrumentation

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 11666d3ab6ec61a9141293b2d9cbcf80224bb059..9e84e6e0899648b978851141ee0a1e146810b0fe 100644
--- a/cc/test/tiled_layer_test_common.h
+++ b/cc/test/tiled_layer_test_common.h
@@ -32,8 +32,7 @@ class FakeLayerUpdater : public LayerUpdater {
     virtual void Update(ResourceUpdateQueue* queue,
                         gfx::Rect source_rect,
                         gfx::Vector2d dest_offset,
-                        bool partial_update,
-                        RenderingStats* stats) OVERRIDE;
+                        bool partial_update) OVERRIDE;
 
    private:
     FakeLayerUpdater* layer_;
@@ -51,8 +50,7 @@ class FakeLayerUpdater : public LayerUpdater {
                                gfx::Size tile_size,
                                float contents_width_scale,
                                float contents_height_scale,
-                               gfx::Rect* resulting_opaque_rect,
-                               RenderingStats* stats) OVERRIDE;
+                               gfx::Rect* resulting_opaque_rect) OVERRIDE;
   // Sets the rect to invalidate during the next call to PrepareToUpdate().
   // After the next call to PrepareToUpdate() the rect is reset.
   void SetRectToInvalidate(gfx::Rect rect, FakeTiledLayer* layer);