NS_IMETHOD RemoveAttributeNS(const nsString& aNamespaceURI, const nsString& aLocalName) {
NS_IMETHOD RemoveAttributeNS(const nsAReadableString& aNamespaceURI, const nsAReadableString& aLocalName) {
  NS_IMETHOD RemoveAttributeNS(const nsString& aNamespaceURI,                               const nsString& aLocalName) {    return mInner.RemoveAttributeNS(aNamespaceURI, aLocalName);  }