cc: Main thread skip single layers instead of subtrees

cc/trees/property_tree.h

Index: cc/trees/property_tree.h
diff --git a/cc/trees/property_tree.h b/cc/trees/property_tree.h
index e441ed84f700dd0132a4574f45a21d7d33f84040..0388244794631c7b260dfdb6ed5720b2662b2fdd 100644
--- a/cc/trees/property_tree.h
+++ b/cc/trees/property_tree.h
@@ -265,6 +265,7 @@ struct CC_EXPORT EffectNodeData {
   bool has_background_filters;
   bool node_or_ancestor_has_background_filters;
   bool to_screen_opacity_is_animated;
+  bool to_screen_opacity_can_animate_on_impl;
   bool hidden_by_backface_visibility;
   bool double_sided;
   bool is_drawn;