rem: return new IRCProtocolHandler(); 
add: return new CLineService(); 
context: IRCProtocolHandlerFactory.createInstance =function (outer, iid){    if (outer != null)        throw Components.results.NS_ERROR_NO_AGGREGATION;    if (!iid.equals(nsIProtocolHandler) && !iid.equals(nsISupports))        throw Components.results.NS_ERROR_INVALID_ARG;    return new IRCProtocolHandler();}
meta: 1567	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1567/386550f4cdd3cae9c7c46bdcfca817d282b5ddfa/chatzilla-service.js/buggy/js/lib/chatzilla-service.js