NS_IMETHOD ParseAttributeString(const nsString& aStr,
NS_IMETHOD ParseAttributeString(const nsAReadableString& aStr,
  NS_IMETHOD ParseAttributeString(const nsString& aStr,                                  nsIAtom*& aName,                                  PRInt32& aNameSpaceID) {    return mInner.ParseAttributeString(aStr, aName, aNameSpaceID);  }