NS_IMETHODIMP nsView :: SetZParent(nsIView *aZParent) { mZParent = aZParent; return NS_OK; }
void SetZParent(nsZPlaceholderView *aZParent) { mZParent = aZParent; }
NS_IMETHODIMP nsView :: SetZParent(nsIView *aZParent){  mZParent = aZParent;  return NS_OK;}