cc: Move GPU raster to DirectRasterWorkerPool.

cc/resources/image_raster_worker_pool.h

Index: cc/resources/image_raster_worker_pool.h
diff --git a/cc/resources/image_raster_worker_pool.h b/cc/resources/image_raster_worker_pool.h
index b3b8ad80363a1958fa32b8acb2e79cd3582aaed3..a4f55c5699f62f45214446c776dfd608e52bf6e2 100644
--- a/cc/resources/image_raster_worker_pool.h
+++ b/cc/resources/image_raster_worker_pool.h
@@ -15,11 +15,10 @@ class CC_EXPORT ImageRasterWorkerPool : public RasterWorkerPool {
 
   static scoped_ptr<RasterWorkerPool> Create(
       ResourceProvider* resource_provider,
-      ContextProvider* context_provider,
       unsigned texture_target);
 
   // Overridden from RasterWorkerPool:
-  virtual void ScheduleTasks(RasterTask::Queue* queue) OVERRIDE;
+  virtual void ScheduleTasks(RasterTaskQueue* queue) OVERRIDE;
   virtual unsigned GetResourceTarget() const OVERRIDE;
   virtual ResourceFormat GetResourceFormat() const OVERRIDE;
   virtual void CheckForCompletedTasks() OVERRIDE;
@@ -30,12 +29,12 @@ class CC_EXPORT ImageRasterWorkerPool : public RasterWorkerPool {
   virtual void OnRasterCompleted(internal::RasterWorkerPoolTask* task,
                                  const PicturePileImpl::Analysis& analysis)
       OVERRIDE;
-  virtual void OnImageDecodeCompleted(internal::WorkerPoolTask* task) OVERRIDE;
+  virtual void OnImageDecodeCompleted(internal::WorkerPoolTask* task) OVERRIDE {
+  }
 
  protected:
   ImageRasterWorkerPool(internal::TaskGraphRunner* task_graph_runner,
                         ResourceProvider* resource_provider,
-                        ContextProvider* context_provider,
                         unsigned texture_target);
 
  private:
@@ -47,7 +46,7 @@ class CC_EXPORT ImageRasterWorkerPool : public RasterWorkerPool {
 
   const unsigned texture_target_;
 
-  RasterTask::Queue raster_tasks_;
+  RasterTaskQueue raster_tasks_;
 
   bool raster_tasks_pending_;
   bool raster_tasks_required_for_activation_pending_;