Attempt to linearize the scroll deltas created in RenderWidgetHostViewBase

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 430 matching lines @@
   void SendScreenRects();
 
   GestureEventFilter* gesture_event_filter() {
     return gesture_event_filter_.get();
   }
 
   OverscrollController* overscroll_controller() {
     return overscroll_controller_.get();
   }
 
+  virtual int SyntheticScrollMessageInterval() const OVERRIDE;
+
  protected:
   virtual RenderWidgetHostImpl* AsRenderWidgetHostImpl() OVERRIDE;
 
   // Transmits the given input event. This is an internal helper for
   // |ForwardInputEvent()| and should not be used directly from elsewhere.
   void SendInputEvent(const WebKit::WebInputEvent& input_event,
                       int event_size, bool is_keyboard_shortcut);
 
   // Internal implementation of the public Forward*Event() methods.
   void ForwardInputEvent(const WebKit::WebInputEvent& input_event,
@@ skipping 421 matching lines @@
 #if defined(OS_WIN)
   std::list<HWND> dummy_windows_for_activation_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_