cc: Move gpu rasterization flag from tree-impl to tree-host-impl.

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 <list>
 #include <set>
 #include <string>
@@ skipping 254 matching lines @@
   OutputSurface* output_surface() const { return output_surface_.get(); }
 
   std::string LayerTreeAsJson() const;
 
   void FinishAllRendering();
   int SourceAnimationFrameNumber() const;
 
   virtual bool InitializeRenderer(scoped_ptr<OutputSurface> output_surface);
   bool IsContextLost();
   TileManager* tile_manager() { return tile_manager_.get(); }
+  void SetUseGpuRasterization(bool use_gpu);
+  bool use_gpu_rasterization() const { return use_gpu_rasterization_; }
   ResourcePool* resource_pool() { return resource_pool_.get(); }
   Renderer* renderer() { return renderer_.get(); }
   const RendererCapabilitiesImpl& GetRendererCapabilities() const;
 
   virtual bool SwapBuffers(const FrameData& frame);
   void SetNeedsBeginFrame(bool enable);
   virtual void WillBeginImplFrame(const BeginFrameArgs& args);
   void DidModifyTilePriorities();
 
   void Readback(void* pixels, const gfx::Rect& rect_in_device_viewport);
@@ skipping 267 matching lines @@
   // request queue.
   std::set<UIResourceId> evicted_ui_resources_;
 
   scoped_ptr<OutputSurface> output_surface_;
   scoped_refptr<ContextProvider> offscreen_context_provider_;
 
   // |resource_provider_| and |tile_manager_| can be NULL, e.g. when using tile-
   // free rendering - see OutputSurface::ForcedDrawToSoftwareDevice().
   scoped_ptr<ResourceProvider> resource_provider_;
   scoped_ptr<TileManager> tile_manager_;
+  bool use_gpu_rasterization_;
   scoped_ptr<RasterWorkerPool> raster_worker_pool_;
   scoped_ptr<RasterWorkerPool> direct_raster_worker_pool_;
   scoped_ptr<ResourcePool> resource_pool_;
   scoped_ptr<ResourcePool> staging_resource_pool_;
   scoped_ptr<Renderer> renderer_;
 
   GlobalStateThatImpactsTilePriority global_tile_state_;
 
   // Tree currently being drawn.
   scoped_ptr<LayerTreeImpl> active_tree_;
@@ skipping 107 matching lines @@
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   size_t transfer_buffer_memory_limit_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_