RAPTOR_STOPWATCH_DEBUGTRACE(("Stop: nsHTMLContentSink::OpenFrameset()\n"));
HTMLContentSink::OpenFrameset(const nsIParserNode& aNode){  NS_START_STOPWATCH(mWatch)  SINK_TRACE_NODE(SINK_TRACE_CALLS,                  "HTMLContentSink::OpenFrameset", aNode, this);  nsresult rv = mCurrentContext->OpenContainer(aNode);  if ((NS_OK == rv) && (nsnull == mFrameset)) {    mFrameset = mCurrentContext->mStack[mCurrentContext->mStackPos-1].mContent;    NS_ADDREF(mFrameset);  }  mInMonolithicContainer++;  NS_STOP_STOPWATCH(mWatch)  return rv;}