cc: Glue LTHI and Scheduler changes for checker-imaging.

cc/trees/layer_tree_host.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_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 460 matching lines @@
   TaskGraphRunner* task_graph_runner() const { return task_graph_runner_; }
 
   void OnCommitForSwapPromises();
 
   void RecordGpuRasterizationHistogram(const LayerTreeHostImpl* host_impl);
 
   MicroBenchmarkController micro_benchmark_controller_;
 
   base::WeakPtr<InputHandler> input_handler_weak_ptr_;
 
+  scoped_refptr<base::SequencedTaskRunner> image_worker_task_runner_;
+
  private:
   friend class LayerTreeHostSerializationTest;
 
   // This is the number of consecutive frames in which we want the content to be
   // suitable for GPU rasterization before re-enabling it.
   enum { kNumFramesToConsiderBeforeGpuRasterization = 60 };
 
   void ApplyViewportDeltas(ScrollAndScaleSet* info);
   void ApplyPageScaleDeltaFromImplSide(float page_scale_delta);
   void InitializeProxy(std::unique_ptr<Proxy> proxy);
@@ skipping 99 matching lines @@
 
   // Layer id to Layer map.
   std::unordered_map<int, Layer*> layer_id_map_;
 
   std::unordered_map<ElementId, Layer*, ElementIdHash> element_layers_map_;
 
   bool in_paint_layer_contents_ = false;
 
   MutatorHost* mutator_host_;
 
-  scoped_refptr<base::SequencedTaskRunner> image_worker_task_runner_;
-
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_