cc :: Move some tracking of layer_property_changed to main thread.

cc/layers/layer_impl.h

Index: cc/layers/layer_impl.h
diff --git a/cc/layers/layer_impl.h b/cc/layers/layer_impl.h
index fe2462921373bfb8900b57796a4188d38a36e3d6..f51b6c83fde005b3ba02c2a728e7e0da1e71782e 100644
--- a/cc/layers/layer_impl.h
+++ b/cc/layers/layer_impl.h
@@ -701,6 +701,8 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
     was_ever_ready_since_last_transform_animation_ = was_ready;
   }
 
+  void NoteLayerPropertyChanged();
+
  protected:
   LayerImpl(LayerTreeImpl* layer_impl,
             int id,
@@ -721,7 +723,6 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
                              SkColor color,
                              float width) const;
 
-  void NoteLayerPropertyChanged();
   void NoteLayerPropertyChangedForSubtree();
 
   // Note carefully this does not affect the current layer.