AddRemoveScrollbar(mHasVerticalScrollbar, aScrollAreaSize.width, aSbSize.width, PR_FALSE);
nsGfxScrollFrameInner::RemoveVerticalScrollbar(const nsSize& aSbSize, nsSize& aScrollAreaSize){   AddRemoveScrollbar(mHasVerticalScrollbar, aScrollAreaSize.width, aSbSize.width, PR_FALSE);}