cc: Hide Gpu Rasterization details in Resource Provider.

cc/resources/gpu_raster_worker_pool.h

 // Copyright 2014 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_GPU_RASTER_WORKER_POOL_H_
 #define CC_RESOURCES_GPU_RASTER_WORKER_POOL_H_
 
 #include "base/memory/weak_ptr.h"
 #include "cc/resources/raster_worker_pool.h"
 #include "cc/resources/rasterizer.h"
 
 namespace cc {
 class ContextProvider;
 class ResourceProvider;
 
 class CC_EXPORT GpuRasterWorkerPool : public RasterWorkerPool,
                                       public Rasterizer,
                                       public RasterizerTaskClient {
  public:
   virtual ~GpuRasterWorkerPool();
 
   static scoped_ptr<RasterWorkerPool> Create(
       base::SequencedTaskRunner* task_runner,
-      ResourceProvider* resource_provider,
-      ContextProvider* context_provider);
+      ResourceProvider* resource_provider);
 
   // Overridden from RasterWorkerPool:
   virtual Rasterizer* AsRasterizer() OVERRIDE;
 
   // Overridden from Rasterizer:
   virtual void SetClient(RasterizerClient* client) OVERRIDE;
   virtual void Shutdown() OVERRIDE;
   virtual void ScheduleTasks(RasterTaskQueue* queue) OVERRIDE;
   virtual void CheckForCompletedTasks() OVERRIDE;
 
   // Overridden from RasterizerTaskClient:
   virtual SkCanvas* AcquireCanvasForRaster(RasterTask* task) OVERRIDE;
   virtual void ReleaseCanvasForRaster(RasterTask* task) OVERRIDE;
 
  private:
   GpuRasterWorkerPool(base::SequencedTaskRunner* task_runner,
-                      ResourceProvider* resource_provider,
-                      ContextProvider* context_provider);
+                      ResourceProvider* resource_provider);
 
   void OnRasterFinished();
   void OnRasterRequiredForActivationFinished();
   void ScheduleRunTasksOnOriginThread();
   void RunTasksOnOriginThread();
   void RunTaskOnOriginThread(RasterizerTask* task);
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   scoped_ptr<TaskGraphRunner> task_graph_runner_;
   const NamespaceToken namespace_token_;
   RasterizerClient* client_;
   ResourceProvider* resource_provider_;
-  ContextProvider* context_provider_;
 
   bool run_tasks_on_origin_thread_pending_;
 
   bool raster_tasks_pending_;
   bool raster_tasks_required_for_activation_pending_;
 
   base::WeakPtrFactory<GpuRasterWorkerPool> raster_finished_weak_ptr_factory_;
 
   scoped_refptr<RasterizerTask> raster_finished_task_;
   scoped_refptr<RasterizerTask> raster_required_for_activation_finished_task_;
 
   // Task graph used when scheduling tasks and vector used to gather
   // completed tasks.
   TaskGraph graph_;
   Task::Vector completed_tasks_;
 
   base::WeakPtrFactory<GpuRasterWorkerPool> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuRasterWorkerPool);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_GPU_RASTER_WORKER_POOL_H_