nsIStyleSheet* aStyleSheet)
nsIStyleSheet* aStyleSheet, PRBool aDocumentSheet)
nsDOMStyleSheetList::StyleSheetRemoved(nsIDocument *aDocument,                                       nsIStyleSheet* aStyleSheet){  if (-1 != mLength) {    nsCOMPtr<nsIDOMStyleSheet> domss(do_QueryInterface(aStyleSheet));    if (domss) {      mLength--;    }  }  return NS_OK;  }