if (outer != null) throw Cr.NS_ERROR_NO_AGGREGATION;  xpcomCheckInterfaces(iid, kServiceIIds, Cr.NS_ERROR_INVALID_ARG); 
if (outer != null) throw Components.results.NS_ERROR_NO_AGGREGATION; 
  createInstance: function (outer, iid)   {    if (outer != null) throw Cr.NS_ERROR_NO_AGGREGATION;    xpcomCheckInterfaces(iid, kServiceIIds,                           Cr.NS_ERROR_INVALID_ARG);    return this._instance == null ?      this._instance = new kServiceConstructor() : this._instance;  }
5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5872/ebac74c6cdf86590bb28ffdbd2961b3182cd1c4e/nsBrowserGlue.js/buggy/browser/components/nsBrowserGlue.js