cc: Make property trees support resourceless draw mode

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 174 matching lines @@
   // When true, |clip_in_target_space| does not include clips from ancestor
   // nodes.
   bool layer_clipping_uses_only_local_clip : 1;
 
   // True if target surface needs to be drawn with a clip applied.
   bool target_is_clipped : 1;
 
   // True if layers with this clip tree node need to be drawn with a clip
   // applied.
   bool layers_are_clipped : 1;
+  bool layers_are_clipped_when_surfaces_disabled : 1;
 
   // Nodes that correspond to unclipped surfaces disregard ancestor clips.
   bool resets_clip : 1;
 };
 
 typedef TreeNode<ClipNodeData> ClipNode;
 
 struct CC_EXPORT EffectNodeData {
   EffectNodeData();
 
@@ skipping 186 matching lines @@
 };
 
 class CC_EXPORT PropertyTrees final {
  public:
   PropertyTrees();
 
   TransformTree transform_tree;
   EffectTree effect_tree;
   ClipTree clip_tree;
   bool needs_rebuild;
+  bool non_root_surfaces_enabled;
   int sequence_number;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROPERTY_TREE_H_