cc: Refactor WorkerPoolTaskClient::AcquireBufferForRaster

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 <deque>
 #include <vector>
 
@@ skipping 12 matching lines @@
 class Resource;
 class ResourceProvider;
 
 namespace internal {
 
 class WorkerPoolTask;
 class RasterWorkerPoolTask;
 
 class CC_EXPORT WorkerPoolTaskClient {
  public:
-  virtual void* AcquireBufferForRaster(RasterWorkerPoolTask* task,
-                                       int* stride) = 0;
+  virtual SkCanvas* AcquireCanvasForRaster(RasterWorkerPoolTask* task) = 0;
   virtual void OnRasterCompleted(RasterWorkerPoolTask* task,
                                  const PicturePileImpl::Analysis& analysis) = 0;
   virtual void OnImageDecodeCompleted(WorkerPoolTask* task) = 0;
 
  protected:
   virtual ~WorkerPoolTaskClient() {}
 };
 
 class CC_EXPORT WorkerPoolTask : public Task {
  public:
@@ skipping 297 matching lines @@
 
   scoped_refptr<internal::WorkerPoolTask> raster_finished_task_;
   scoped_refptr<internal::WorkerPoolTask>
       raster_required_for_activation_finished_task_;
   base::WeakPtrFactory<RasterWorkerPool> weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RASTER_WORKER_POOL_H_