Implement a method to access the non-composited content root layer picture pile.

cc/picture_layer_impl.h

 // Copyright 2012 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_PICTURE_LAYER_IMPL_H_
 #define CC_PICTURE_LAYER_IMPL_H_
 
 #include "cc/layer_impl.h"
 #include "cc/picture_layer_tiling.h"
 #include "cc/picture_layer_tiling_set.h"
@@ skipping 27 matching lines @@
                                          gfx::Rect) OVERRIDE;
 
   // PushPropertiesTo active tree => pending tree
   void SyncFromActiveLayer();
   void SyncTiling(const PictureLayerTiling* tiling);
 
   // Mask-related functions
   void SetIsMask(bool is_mask);
   virtual ResourceProvider::ResourceId contentsResourceId() const OVERRIDE;
 
+  const PicturePileImpl* pile() const { return pile_.get(); }

[enne (OOO), 2013/01/02 19:35:22]

You should just return a clone here so that caller doesn't can't forget to do
so.

[Leandro Graciá Gil, 2013/01/03 20:32:10]

Done.

+
 protected:
   PictureLayerImpl(LayerTreeImpl* treeImpl, int id);
   void AddTiling(float contents_scale, gfx::Size tile_size);
   void SyncFromActiveLayer(const PictureLayerImpl* other);
   gfx::Size TileSize() const;
 
   PictureLayerTilingSet tilings_;
   scoped_refptr<PicturePileImpl> pile_;
   Region invalidation_;
 
   gfx::Transform last_screen_space_transform_;
   double last_update_time_;
   gfx::Size last_bounds_;
   gfx::Size last_content_bounds_;
   float last_content_scale_x_;
   float last_content_scale_y_;
   bool is_mask_;
 
   friend class PictureLayer;
   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 };
 
 }
 
 #endif  // CC_PICTURE_LAYER_IMPL_H_