Update from chromium https://crrev.com/304586

cc/test/fake_picture_layer_tiling_client.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_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_
 #define CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_
 
 #include "cc/resources/picture_layer_tiling.h"
 #include "cc/resources/picture_pile_impl.h"
 #include "cc/resources/tile.h"
 #include "cc/resources/tile_manager.h"
 #include "cc/test/fake_tile_manager_client.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace cc {
 
 class FakePictureLayerTilingClient : public PictureLayerTilingClient {
  public:
   FakePictureLayerTilingClient();
   explicit FakePictureLayerTilingClient(ResourceProvider* resource_provider);
   ~FakePictureLayerTilingClient() override;
 
   // PictureLayerTilingClient implementation.
   scoped_refptr<Tile> CreateTile(PictureLayerTiling* tiling,
                                  const gfx::Rect& rect) override;
-  RasterSource* GetRasterSource() override;
   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override;
   TilePriority::PriorityBin GetMaxTilePriorityBin() const override;
   size_t GetMaxTilesForInterestArea() const override;
   float GetSkewportTargetTimeInSeconds() const override;
   int GetSkewportExtrapolationLimitInContentPixels() const override;
   bool RequiresHighResToDraw() const override;
 
   void SetTileSize(const gfx::Size& tile_size);
   gfx::Size TileSize() const { return tile_size_; }
 
@@ skipping 17 matching lines @@
   void set_max_tiles_for_interest_area(size_t area) {
     max_tiles_for_interest_area_ = area;
   }
   void set_skewport_target_time_in_seconds(float time) {
     skewport_target_time_in_seconds_ = time;
   }
   void set_skewport_extrapolation_limit_in_content_pixels(int limit) {
     skewport_extrapolation_limit_in_content_pixels_ = limit;
   }
   void set_tree(WhichTree tree) { tree_ = tree; }
+  RasterSource* raster_source() { return pile_.get(); }
 
   TileManager* tile_manager() const {
     return tile_manager_.get();
   }
 
  protected:
   FakeTileManagerClient tile_manager_client_;
   scoped_ptr<ResourcePool> resource_pool_;
   scoped_ptr<TileManager> tile_manager_;
   scoped_refptr<PicturePileImpl> pile_;
   gfx::Size tile_size_;
   PictureLayerTiling* twin_tiling_;
   PictureLayerTiling* recycled_twin_tiling_;
   gfx::Rect text_rect_;
   bool allow_create_tile_;
   Region invalidation_;
   TilePriority::PriorityBin max_tile_priority_bin_;
   size_t max_tiles_for_interest_area_;
   float skewport_target_time_in_seconds_;
   int skewport_extrapolation_limit_in_content_pixels_;
   WhichTree tree_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_