NS_IMETHOD StyleRuleAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule) { return NS_OK; }
HTMLContentSink::StyleRuleAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule) { return NS_OK; }
  NS_IMETHOD StyleRuleAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet,                            nsIStyleRule* aStyleRule)  {    return NS_OK;  }