[NOT FOR REVIEW]

cc/trees/layer_tree.h

 // Copyright 2016 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_LAYER_TREE_H_
 #define CC_TREES_LAYER_TREE_H_
 
 #include <memory>
 #include <unordered_map>
 #include <unordered_set>
@@ skipping 116 matching lines @@
 
   void SetDeviceColorSpace(const gfx::ColorSpace& device_color_space);
   const gfx::ColorSpace& device_color_space() const {
     return inputs_.device_color_space;
   }
 
   // Used externally by blink for setting the PropertyTrees when
   // |settings_.use_layer_lists| is true. This is a SPV2 setting.
   PropertyTrees* property_trees() { return &property_trees_; }
 
+  PropertyTrees* test_property_trees_with_new_clip_tree() {
+    if (!test_property_trees_with_new_clip_tree_)
+      test_property_trees_with_new_clip_tree_ = new PropertyTrees();
+    return test_property_trees_with_new_clip_tree_;
+  }
+
   void SetNeedsDisplayOnAllLayers();
 
   void SetNeedsCommit();
 
   const LayerTreeSettings& GetSettings() const;
 
   // Methods which should only be used internally in cc ------------------
   void RegisterLayer(Layer* layer);
   void UnregisterLayer(Layer* layer);
   Layer* LayerById(int id) const;
@@ skipping 128 matching lines @@
     EventListenerProperties event_listener_properties[static_cast<size_t>(
         EventListenerClass::kNumClasses)];
 
     std::unique_ptr<PendingPageScaleAnimation> pending_page_scale_animation;
   };
 
   Inputs inputs_;
 
   PropertyTrees property_trees_;
 
+  PropertyTrees* test_property_trees_with_new_clip_tree_;
+
   bool needs_full_tree_sync_;
   bool needs_meta_info_recomputation_;
 
   gfx::Vector2dF elastic_overscroll_;
 
   scoped_refptr<HeadsUpDisplayLayer> hud_layer_;
 
   // Set of layers that need to push properties.
   LayerSet layers_that_should_push_properties_;
 
@@ skipping 12 matching lines @@
   // external embedder.
   EnginePictureCache* engine_picture_cache_;
   ClientPictureCache* client_picture_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTree);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_H_