cc: Trigger GPU rasterization based on a per-layer hint

cc/layers/layer.h

 // Copyright 2010 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_LAYERS_LAYER_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 371 matching lines @@
                                       float* contents_scale_x,
                                       float* contents_scale_y,
                                       gfx::Size* content_bounds);
 
   LayerTreeHost* layer_tree_host() { return layer_tree_host_; }
   const LayerTreeHost* layer_tree_host() const { return layer_tree_host_; }
 
   // Set the priority of all desired textures in this layer.
   virtual void SetTexturePriorities(const PriorityCalculator& priority_calc) {}
 
+  virtual void SetHasGpuRasterizationHint(bool has_hint) {}
+
   bool AddAnimation(scoped_ptr<Animation> animation);
   void PauseAnimation(int animation_id, double time_offset);
   void RemoveAnimation(int animation_id);
 
   LayerAnimationController* layer_animation_controller() {
     return layer_animation_controller_.get();
   }
   void SetLayerAnimationControllerForTest(
       scoped_refptr<LayerAnimationController> controller);
 
@@ skipping 217 matching lines @@
   DrawProperties<Layer> draw_properties_;
 
   PaintProperties paint_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_