NS_IMETHOD RemoveObserver(nsIRDFObserver* n) { return mInner->RemoveObserver(n); }
NS_IMETHODIMP nsCharsetMenu::RemoveObserver(nsIRDFObserver* n) { return mInner->RemoveObserver(n); }
  NS_IMETHOD RemoveObserver(nsIRDFObserver* n)  {      return mInner->RemoveObserver(n);  }