cc: Adding support for RGBA_4444 tile textures

cc/resources/raster_worker_pool.h

 // Copyright 2013 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_RASTER_WORKER_POOL_H_
 #define CC_RESOURCES_RASTER_WORKER_POOL_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 179 matching lines @@
       gfx::Rect content_rect,
       float contents_scale,
       RasterMode raster_mode,
       bool is_tile_in_pending_tree_now_bin,
       TileResolution tile_resolution,
       int layer_id,
       const void* tile_id,
       int source_frame_number,
       RenderingStatsInstrumentation* rendering_stats,
       const RasterTask::Reply& reply,
-      Task::Set* dependencies);
+      Task::Set* dependencies,
+      bool use_16bit_tiles);
 
   static Task CreateImageDecodeTask(
       skia::LazyPixelRef* pixel_ref,
       int layer_id,
       RenderingStatsInstrumentation* stats_instrumentation,
       const Task::Reply& reply);
 
  protected:
   typedef std::vector<scoped_refptr<internal::WorkerPoolTask> > TaskVector;
   typedef std::vector<scoped_refptr<internal::RasterWorkerPoolTask> >
@@ skipping 58 matching lines @@
 
   base::WeakPtrFactory<RasterWorkerPool> weak_ptr_factory_;
   scoped_refptr<internal::WorkerPoolTask> raster_finished_task_;
   scoped_refptr<internal::WorkerPoolTask>
       raster_required_for_activation_finished_task_;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RASTER_WORKER_POOL_H_