The Tor Browser / file revision

 function testPropagatedFunArgs()

 {

   var win = this;

   var res = [], q = [];

   function addEventListener(name, func, flag) {

     q.push(func);

   }

   var pageInfo, obs;

   addEventListener("load", handleLoad, true);

   var observer = {

     observe: function(win, topic, data) {

       // obs.removeObserver(observer, "page-info-dialog-loaded");

       handlePageInfo();

     }

   };

   function handleLoad() {

     pageInfo = { toString: function() { return "pageInfo"; } };

     obs = { addObserver: function (obs, topic, data) { obs.observe(win, topic, data); } };

     obs.addObserver(observer, "page-info-dialog-loaded", false);

   }

   function handlePageInfo() {

     res.push(pageInfo);

     function $(aId) { res.push(pageInfo); };

     var feedTab = $("feedTab");

   }

   q[0]();

   return res.join(',');

 }

 assertEq(testPropagatedFunArgs(), "pageInfo,pageInfo");