gpu: Refactor GpuMemoryBuffer framework for multi-process support.

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"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/resources/picture_pile_impl.h"
 #include "cc/resources/raster_mode.h"
 #include "cc/resources/tile_priority.h"
 #include "cc/resources/worker_pool.h"
+#include "third_party/khronos/GLES2/gl2.h"
 
 class SkDevice;
 
 namespace skia {
 class LazyPixelRef;
 }
 
 namespace cc {
 class PicturePileImpl;
 class PixelBufferRasterWorkerPool;
@@ skipping 150 matching lines @@
   // scheduled tasks. Reply callbacks are still guaranteed to run.
   virtual void Shutdown() OVERRIDE;
 
   // Schedule running of raster tasks in |queue| and all dependencies.
   // Previously scheduled tasks that are no longer needed to run
   // raster tasks in |queue| will be canceled unless already running.
   // Once scheduled, reply callbacks are guaranteed to run for all tasks
   // even if they later get canceled by another call to ScheduleTasks().
   virtual void ScheduleTasks(RasterTask::Queue* queue) = 0;
 
+  // Returns the format that need to be used for raster task resources.
+  virtual GLenum GetResourceFormat() const = 0;
+
   // TODO(vmpstr): Figure out an elegant way to not pass this many parameters.
   static RasterTask CreateRasterTask(
       const Resource* resource,
       PicturePileImpl* picture_pile,
       gfx::Rect content_rect,
       float contents_scale,
       RasterMode raster_mode,
       bool is_tile_in_pending_tree_now_bin,
       TileResolution tile_resolution,
       int layer_id,
@@ skipping 73 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_