nsHTMLElementFactory::CreateInstanceByTag(const nsString& aTag,
nsHTMLElementFactory::CreateInstanceByTag(nsINodeInfo *aNodeInfo,
nsHTMLElementFactory::CreateInstanceByTag(const nsString& aTag,                                          nsIContent** aResult){  nsresult rv;  nsCOMPtr<nsIHTMLContent> htmlContent;  rv = NS_CreateHTMLElement(getter_AddRefs(htmlContent), aTag);  nsCOMPtr<nsIContent> content = do_QueryInterface(htmlContent);  *aResult = content;  NS_IF_ADDREF(*aResult);  return rv;}