Fix blurry content after disabling dev tools emulation

cc/trees/layer_tree_impl.h

 // Copyright 2012 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_IMPL_H_
 #define CC_TREES_LAYER_TREE_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 121 matching lines @@
 
   void SetPropertyTrees(PropertyTrees* property_trees);
   PropertyTrees* property_trees() { return &property_trees_; }
 
   void UpdatePropertyTreesForBoundsDelta();
 
   void PushPropertiesTo(LayerTreeImpl* tree_impl);
 
   void MoveChangeTrackingToLayers();
 
+  void ForceRecalculateRasterScales();
+
   LayerImplList::const_iterator begin() const;
   LayerImplList::const_iterator end() const;
   LayerImplList::reverse_iterator rbegin();
   LayerImplList::reverse_iterator rend();
 
   void AddToOpacityAnimationsMap(int id, float opacity);
   void AddToTransformAnimationsMap(int id, gfx::Transform transform);
   void AddToFilterAnimationsMap(int id, const FilterOperations& filters);
 
   int source_frame_number() const { return source_frame_number_; }
@@ skipping 408 matching lines @@
 
   std::unique_ptr<PendingPageScaleAnimation> pending_page_scale_animation_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LayerTreeImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_IMPL_H_