cc: Remove unused Tile ctor parameter (raster_source).

cc/resources/tile.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_RESOURCES_TILE_H_
 #define CC_RESOURCES_TILE_H_
 
 #include "base/memory/ref_counted.h"
-#include "cc/resources/raster_source.h"
 #include "cc/resources/tile_draw_info.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace cc {
 
 class PrioritizedTile;
 class TileManager;
 struct TilePriority;
 
@@ skipping 58 matching lines @@
   int tiling_i_index() const { return tiling_i_index_; }
   int tiling_j_index() const { return tiling_j_index_; }
 
  private:
   friend class TileManager;
   friend class FakeTileManager;
   friend class FakePictureLayerImpl;
 
   // Methods called by by tile manager.
   Tile(TileManager* tile_manager,
-       RasterSource* raster_source,
        const gfx::Size& desired_texture_size,
        const gfx::Rect& content_rect,
        float contents_scale,
        int layer_id,
        int source_frame_number,
        int flags);
   ~Tile();
 
   bool HasRasterTask() const { return !!raster_task_.get(); }
 
@@ skipping 20 matching lines @@
   scoped_refptr<RasterTask> raster_task_;
 
   DISALLOW_COPY_AND_ASSIGN(Tile);
 };
 
 using ScopedTilePtr = scoped_ptr<Tile, Tile::Deleter>;
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_H_