nsIView *closestView = aFrame->GetClosestView(aPresContext);
nsIView *closestView = aFrame->GetClosestView();
nsTypedSelection::DoAutoScroll(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint){  if (!aPresContext || !aFrame)    return NS_ERROR_NULL_POINTER;  // Find the closest view to the frame!  nsIView *closestView = aFrame->GetClosestView(aPresContext);  if (!closestView)    return NS_ERROR_FAILURE;  return DoAutoScrollView(aPresContext, closestView, aPoint, PR_TRUE);}