nsTableCellFrame* it = new (aPresShell) nsTableCellFrame;
nsTableCellFrame* it = (aIsBorderCollapse) ? new (aPresShell) nsBCTableCellFrame : new (aPresShell) nsTableCellFrame;
NS_NewTableCellFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame){  NS_PRECONDITION(aNewFrame, "null OUT ptr");  if (nsnull == aNewFrame) {    return NS_ERROR_NULL_POINTER;  }  nsTableCellFrame* it = new (aPresShell) nsTableCellFrame;  if (nsnull == it) {    return NS_ERROR_OUT_OF_MEMORY;  }  *aNewFrame = it;  return NS_OK;}