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"
 #include "cc/picture_pile_impl.h"
 #include "cc/scoped_ptr_vector.h"
+#include "skia/ext/refptr.h"
+#include "third_party/skia/include/core/SkPicture.h"
 
 namespace cc {
 
 struct AppendQuadsData;
 class QuadSink;
 
 class CC_EXPORT PictureLayerImpl : public LayerImpl,
                                    public PictureLayerTilingClient {
 public:
   static scoped_ptr<PictureLayerImpl> create(LayerTreeImpl* treeImpl, int id)
   {
       return make_scoped_ptr(new PictureLayerImpl(treeImpl, id));
   }
   virtual ~PictureLayerImpl();
 
   // LayerImpl overrides.
   virtual const char* layerTypeAsString() const OVERRIDE;
   virtual void appendQuads(QuadSink&, AppendQuadsData&) OVERRIDE;
   virtual void dumpLayerProperties(std::string*, int indent) const OVERRIDE;
   virtual void didUpdateTransforms() OVERRIDE;
   virtual void calculateContentsScale(
       float ideal_contents_scale,
       float* contents_scale_x,
       float* contents_scale_y,
       gfx::Size* content_bounds) OVERRIDE;
+  virtual skia::RefPtr<SkPicture> getPicture() OVERRIDE;
 
   // PictureLayerTilingClient overrides.
   virtual scoped_refptr<Tile> CreateTile(PictureLayerTiling*,
                                          gfx::Rect) OVERRIDE;
 
   // PushPropertiesTo active tree => pending tree
   void SyncFromActiveLayer();
   void SyncTiling(const PictureLayerTiling* tiling);
 
   // Mask-related functions
@@ skipping 19 matching lines @@
   float last_content_scale_y_;
   bool is_mask_;
 
   friend class PictureLayer;
   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 };
 
 }
 
 #endif  // CC_PICTURE_LAYER_IMPL_H_