cc : Track ids for which active opacity always wins on property trees

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index eb851d86b972a2226cdc3e1817fa7080495894fe..61d8b01f484f47712b6ce6ce4d1a82e4faaa1f9c 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -505,6 +505,10 @@ bool Layer::OpacityCanAnimateOnImplThread() const {
   return false;
 }
 
+bool Layer::AlwaysUseActiveTreeOpacity() const {
+  return false;
+}
+
 void Layer::SetBlendMode(SkXfermode::Mode blend_mode) {
   DCHECK(IsPropertyChangeAllowed());
   if (blend_mode_ == blend_mode)