NS_IMETHOD GetElementsByTagNameNS(const nsString& aNamespaceURI, const nsString& aLocalName,
NS_IMETHOD GetElementsByTagNameNS(const nsAReadableString& aNamespaceURI, const nsAReadableString& aLocalName,
  NS_IMETHOD GetElementsByTagNameNS(const nsString& aNamespaceURI,                                    const nsString& aLocalName,                                    nsIDOMNodeList** aReturn) {    return mInner.GetElementsByTagNameNS(aNamespaceURI, aLocalName, aReturn);  }