| Index: Source/WebCore/platform/ScrollView.cpp | 
| =================================================================== | 
| --- Source/WebCore/platform/ScrollView.cpp	(revision 141506) | 
| +++ Source/WebCore/platform/ScrollView.cpp	(working copy) | 
| @@ -602,7 +602,7 @@ | 
| m_verticalScrollbar->setSuppressInvalidation(false); | 
| } | 
|  | 
| -    if (hasHorizontalScrollbar != (m_horizontalScrollbar != 0) || hasVerticalScrollbar != (m_verticalScrollbar != 0)) { | 
| +    if (hasHorizontalScrollbar != newHasHorizontalScrollbar || hasVerticalScrollbar != newHasVerticalScrollbar) { | 
| // FIXME: Is frameRectsChanged really necessary here? Have any frame rects changed? | 
| frameRectsChanged(); | 
| positionScrollbarLayers(); | 
|  |