Setting Accurate ScrollResult from Blink for Elastic Scroll.

content/renderer/render_widget.h

 // Copyright (c) 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 CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 800 matching lines @@
 #endif  // defined(VIDEO_HOLE)
 
   // A list of RenderFrames associated with this RenderWidget. Notifications
   // are sent to each frame in the list for events such as changing
   // visibility state for example.
   base::ObserverList<RenderFrameImpl> render_frames_;
 
   ui::MenuSourceType context_menu_source_type_;
   bool has_host_context_menu_location_;
   gfx::Point host_context_menu_location_;
+  gfx::Vector2dF latest_overscroll_delta_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_