cc: Add checker-imaging support to TileManager.

cc/tiles/picture_layer_tiling_set.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_TILES_PICTURE_LAYER_TILING_SET_H_
 #define CC_TILES_PICTURE_LAYER_TILING_SET_H_
 
 #include <stddef.h>
 
 #include <list>
@@ skipping 60 matching lines @@
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation,
       float minimum_contents_scale,
       float maximum_contents_scale);
 
   // This function is called on the sync tree right after commit.
   void UpdateRasterSourceDueToLCDChange(
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation);
 
+  void UpdateTilingsForImplSideInvalidation(const Region& layer_invalidation);
+
   PictureLayerTiling* AddTiling(float contents_scale,
                                 scoped_refptr<RasterSource> raster_source);
   size_t num_tilings() const { return tilings_.size(); }
   int NumHighResTilings() const;
   PictureLayerTiling* tiling_at(size_t idx) { return tilings_[idx].get(); }
   const PictureLayerTiling* tiling_at(size_t idx) const {
     return tilings_[idx].get();
   }
   WhichTree tree() const { return tree_; }
 
@@ skipping 170 matching lines @@
 
   friend class Iterator;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PictureLayerTilingSet);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_PICTURE_LAYER_TILING_SET_H_