Add ClipNode when Render Surface Inherits Clip

cc/trees/property_tree.h

 // 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.
 
 #ifndef CC_TREES_PROPERTY_TREE_H_
 #define CC_TREES_PROPERTY_TREE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 121 matching lines @@
 
 typedef TreeNode<TransformNodeData> TransformNode;
 
 struct CC_EXPORT ClipNodeData {
   ClipNodeData();
 
   gfx::RectF clip;
   gfx::RectF combined_clip;
   int transform_id;
   int target_id;
+  // This value is true for clip nodes created by layers that do not apply any
+  // clip themselves, but own a render surface that inherits the parent
+  // target space clip.
+  bool inherit_parent_target_space_clip;
 };
 
 typedef TreeNode<ClipNodeData> ClipNode;
 
 struct CC_EXPORT OpacityNodeData {
   OpacityNodeData();
 
   float opacity;
   float screen_space_opacity;
 };
@@ skipping 169 matching lines @@
   TransformTree transform_tree;
   OpacityTree opacity_tree;
   ClipTree clip_tree;
   bool needs_rebuild;
   int sequence_number;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROPERTY_TREE_H_