Minor Refactor in RenderListBox

Source/core/rendering/RenderListBox.h

 /*
  * This file is part of the select element renderer in WebCore.
  *
  * Copyright (C) 2006, 2007, 2009 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 120 matching lines @@
     virtual IntRect scrollableAreaBoundingBox() const OVERRIDE;
 
     // NOTE: This should only be called by the overriden setScrollOffset from ScrollableArea.
     void scrollTo(int newOffset);
 
     void setHasVerticalScrollbar(bool hasScrollbar);
     PassRefPtr<Scrollbar> createScrollbar();
     void destroyScrollbar();
 
     LayoutUnit itemHeight() const;
-    void valueChanged(unsigned listIndex);
     int numVisibleItems() const;
     int numItems() const;
     LayoutUnit listHeight() const;
     int scrollbarLeft() const;
     void paintScrollbar(PaintInfo&, const LayoutPoint&);
     void paintItemForeground(PaintInfo&, const LayoutPoint&, int listIndex);
     void paintItemBackground(PaintInfo&, const LayoutPoint&, int listIndex);
     void scrollToRevealSelection();
 
     bool m_optionsChanged;
     bool m_scrollToRevealSelectionAfterLayout;
     bool m_inAutoscroll;
     int m_optionsWidth;
     int m_indexOffset;
 
     RefPtr<Scrollbar> m_vBar;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderListBox, isListBox());
 
 } // namepace WebCore
 
 #endif // RenderListBox_h