cc: Move task graph construction to RasterWorkerPool classes.

cc/resources/pixel_buffer_raster_worker_pool.h

Index: cc/resources/pixel_buffer_raster_worker_pool.h
diff --git a/cc/resources/pixel_buffer_raster_worker_pool.h b/cc/resources/pixel_buffer_raster_worker_pool.h
index 2a89d4b74d6a8443c655bf722e46a0fe24ba794d..be609a832c377906ffde9db88c78f281fff13e5b 100644
--- a/cc/resources/pixel_buffer_raster_worker_pool.h
+++ b/cc/resources/pixel_buffer_raster_worker_pool.h
@@ -33,6 +33,9 @@ class CC_EXPORT PixelBufferRasterWorkerPool : public RasterWorkerPool {
   PixelBufferRasterWorkerPool(ResourceProvider* resource_provider,
                               size_t num_threads);
 
+  // Overridden from RasterWorkerPool:
+  virtual void OnRasterTasksFinished() OVERRIDE;
+
   void FlushUploads();
   void CheckForCompletedUploads();
   void ScheduleCheckForCompletedRasterTasks();
@@ -43,11 +46,6 @@ class CC_EXPORT PixelBufferRasterWorkerPool : public RasterWorkerPool {
       bool was_canceled,
       bool needs_upload);
   void DidCompleteRasterTask(internal::RasterWorkerPoolTask* task);
-  void OnRasterFinished(int64 schedule_more_tasks_count);
-
-  static void RunRasterFinishedTask(
-      scoped_refptr<base::MessageLoopProxy> origin_loop,
-      const base::Closure& on_raster_finished_callback);
 
   bool shutdown_;
 
@@ -62,9 +60,6 @@ class CC_EXPORT PixelBufferRasterWorkerPool : public RasterWorkerPool {
   base::CancelableClosure check_for_completed_raster_tasks_callback_;
   bool check_for_completed_raster_tasks_pending_;
 
-  base::WeakPtrFactory<PixelBufferRasterWorkerPool> weak_ptr_factory_;
-  int64 schedule_more_tasks_count_;
-
   DISALLOW_COPY_AND_ASSIGN(PixelBufferRasterWorkerPool);
 };