cc: Main thread skip single layers instead of subtrees

cc/layers/layer_utils.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/layer_utils.h"
 
 #include "cc/layers/layer_impl.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "ui/gfx/geometry/box_f.h"
 
 namespace cc {
 
 namespace {
 
 bool HasTransformAnimationThatInflatesBounds(const LayerImpl& layer) {
   return layer.HasTransformAnimationThatInflatesBounds();
 }
 
 inline bool HasAncestorTransformAnimation(const TransformNode* transform_node) {
-  return transform_node->data.to_screen_is_animated;
+  return transform_node->data.to_screen_is_potentially_animated;
 }
 
 inline bool HasAncestorFilterAnimation(const LayerImpl& layer) {
   // This function returns false, it should use the effect tree once filters
   // and filter animations are known by the tree.
   return false;
 }
 
 }  // namespace
 
@@ skipping 79 matching lines @@
   // be applied.
   if (!coalesced_transform.IsIdentity())
     coalesced_transform.TransformBox(&box);
 
   *out = box;
 
   return true;
 }
 
 }  // namespace cc