Move scaling of ui resources for scrollbars to the time of upload

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 <stddef.h>
 
 #include <bitset>
@@ skipping 523 matching lines @@
   virtual void DeleteUIResource(UIResourceId uid);
   void EvictAllUIResources();
   bool EvictedUIResourcesExist() const;
 
   virtual ResourceId ResourceIdForUIResource(UIResourceId uid) const;
 
   virtual bool IsUIResourceOpaque(UIResourceId uid) const;
 
   struct UIResourceData {
     ResourceId resource_id;
-    gfx::Size size;
     bool opaque;
   };
 
   // Returns the amount of delta that can be applied to scroll_node, taking
   // page scale into account.
   gfx::Vector2dF ComputeScrollDelta(ScrollNode* scroll_node,
                                     const gfx::Vector2dF& delta);
 
   void ScheduleMicroBenchmark(std::unique_ptr<MicroBenchmarkImpl> benchmark);
 
@@ skipping 285 matching lines @@
 
   std::unique_ptr<PendingTreeDurationHistogramTimer>
       pending_tree_duration_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_