nsHTMLMappedAttributes::SetStyleSheet(nsIHTMLStyleSheet* aSheet)
HTMLAttributesImpl::SetStyleSheet(nsIHTMLStyleSheet* aSheet)
nsHTMLMappedAttributes::SetStyleSheet(nsIHTMLStyleSheet* aSheet){  if (mSheet && mUniqued) {    mSheet->DropMappedAttributes(this);  }  mSheet = aSheet;  // not ref counted  mUniqued = PR_FALSE;  return NS_OK;}