Refactor fixed layout mode

Source/core/platform/chromium/FramelessScrollView.cpp

 /*
  * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 78 matching lines @@
 }
 
 void FramelessScrollView::paintContents(GraphicsContext*, const IntRect&)
 {
 }
 
 void FramelessScrollView::contentsResized()
 {
 }
 
-void FramelessScrollView::visibleContentsResized()
+void FramelessScrollView::scrollbarExistenceDidChange()
 {
 }
 
 } // namespace WebCore