[NOT FOR REVIEW]

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index 7362df6c5cc3fbacd5acb720e65ce686d0a7d7ee..f7ce45f8e288f5a033c44ad68b56c98dbb461ca9 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -87,6 +87,7 @@ Layer::Layer()
       transform_tree_index_(TransformTree::kInvalidNodeId),
       effect_tree_index_(EffectTree::kInvalidNodeId),
       clip_tree_index_(ClipTree::kInvalidNodeId),
+      new_clip_tree_index_(ClipTree::kInvalidNodeId),
       scroll_tree_index_(ScrollTree::kInvalidNodeId),
       property_tree_sequence_number_(-1),
       should_flatten_transform_from_property_tree_(false),
@@ -957,6 +958,17 @@ int Layer::clip_tree_index() const {
   return clip_tree_index_;
 }
 
+void Layer::SetNewClipTreeIndex(int index) {
+  if (new_clip_tree_index_ == index)
+    return;
+  new_clip_tree_index_ = index;
+  SetNeedsPushProperties();
+}
+
+int Layer::new_clip_tree_index() const {
+  return new_clip_tree_index_;
+}
+
 void Layer::SetEffectTreeIndex(int index) {
   DCHECK(IsPropertyChangeAllowed());
   if (effect_tree_index_ == index)
@@ -1143,6 +1155,7 @@ void Layer::PushPropertiesTo(LayerImpl* layer) {
   layer->SetTransformTreeIndex(transform_tree_index());
   layer->SetEffectTreeIndex(effect_tree_index());
   layer->SetClipTreeIndex(clip_tree_index());
+  layer->SetNewClipTreeIndex(new_clip_tree_index());
   layer->SetScrollTreeIndex(scroll_tree_index());
   layer->set_offset_to_transform_parent(offset_to_transform_parent_);
   layer->SetDrawsContent(DrawsContent());