TaskGraphRunner refactor

cc/trees/layer_tree_host_impl.h

 // Copyright 2011 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_TREES_LAYER_TREE_HOST_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 51 matching lines @@
 class PictureLayerImpl;
 class RasterTilePriorityQueue;
 class TileTaskWorkerPool;
 class RenderPassDrawQuad;
 class RenderingStatsInstrumentation;
 class ResourcePool;
 class ScrollElasticityHelper;
 class ScrollbarLayerImplBase;
 class SwapPromise;
 class SwapPromiseMonitor;
+class SynchronousTaskGraphRunner;
 class TextureMailboxDeleter;
 class TopControlsManager;
 class UIResourceBitmap;
 class UIResourceRequest;
 struct ScrollAndScaleSet;
 class Viewport;
 
 enum class GpuRasterizationStatus {
   ON,
   ON_FORCED,
@@ skipping 721 matching lines @@
   scoped_ptr<AnimationHost> animation_host_;
   std::set<VideoFrameController*> video_frame_controllers_;
 
   // Map from scroll layer ID to scrollbar animation controller.
   // There is one animation controller per pair of overlay scrollbars.
   base::ScopedPtrHashMap<int, scoped_ptr<ScrollbarAnimationController>>
       scrollbar_animation_controllers_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
   MicroBenchmarkControllerImpl micro_benchmark_controller_;
-  scoped_ptr<TaskGraphRunner> single_thread_synchronous_task_graph_runner_;
+  scoped_ptr<SynchronousTaskGraphRunner>
+      single_thread_synchronous_task_graph_runner_;
 
   // Optional callback to notify of new tree activations.
   base::Closure tree_activation_callback_;
 
   SharedBitmapManager* shared_bitmap_manager_;
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager_;
   TaskGraphRunner* task_graph_runner_;
   int id_;
 
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   bool requires_high_res_to_draw_;
   bool is_likely_to_require_a_draw_;
 
   scoped_ptr<FrameTimingTracker> frame_timing_tracker_;
 
   scoped_ptr<Viewport> viewport_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_