| Index: cc/input/scrollbar.h | 
| diff --git a/cc/input/scrollbar.h b/cc/input/scrollbar.h | 
| index 19ac92a0db9d630a48c3ff3eaca903094376b23e..959186b8b459e4cbbd817a412dda7e7084715eaa 100644 | 
| --- a/cc/input/scrollbar.h | 
| +++ b/cc/input/scrollbar.h | 
| @@ -31,6 +31,9 @@ class Scrollbar { | 
| virtual int ThumbThickness() const = 0; | 
| virtual int ThumbLength() const = 0; | 
| virtual gfx::Rect TrackRect() const = 0; | 
| +  virtual float ThumbOpacity() const = 0; | 
| +  virtual float TrackOpacity() const = 0; | 
| +  virtual bool NeedsPaintPart(ScrollbarPart part) const = 0; | 
| virtual void PaintPart(SkCanvas* canvas, | 
| ScrollbarPart part, | 
| const gfx::Rect& content_rect) = 0; | 
|  |