cc: Remove tile sharing from tilings.

cc/layers/layer_impl.h

 // Copyright 2011 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_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 783 matching lines @@
   // active side.
   int num_dependents_need_push_properties_;
 
   // Layers that share a sorting context id will be sorted together in 3d
   // space.  0 is a special value that means this layer will not be sorted and
   // will be drawn in paint order.
   int sorting_context_id_;
 
   DrawMode current_draw_mode_;
 
+  // Group of properties that need to be computed based on the layer tree
+  // hierarchy before layers can be drawn.
+  DrawProperties<LayerImpl> draw_properties_;

[enne (OOO), 2015/04/29 18:01:24]

Could you just call draw_properties() that returns a non-const ref?

+
  private:
   // Rect indicating what was repainted/updated during update.
   // Note that plugin layers bypass this and leave it empty.
   // Uses layer (not content) space.
   gfx::Rect update_rect_;
 
   // This rect is in layer space.
   gfx::RectF damage_rect_;
 
   // Manages animations for this layer.
   scoped_refptr<LayerAnimationController> layer_animation_controller_;
 
   // Manages scrollbars for this layer
   scoped_ptr<ScrollbarAnimationController> scrollbar_animation_controller_;
 
   scoped_ptr<ScrollbarSet> scrollbars_;
 
   ScopedPtrVector<CopyOutputRequest> copy_requests_;
 
-  // Group of properties that need to be computed based on the layer tree
-  // hierarchy before layers can be drawn.
-  DrawProperties<LayerImpl> draw_properties_;
-
   scoped_refptr<base::trace_event::ConvertableToTraceFormat> debug_info_;
   scoped_ptr<RenderSurfaceImpl> render_surface_;
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_