The Tor Browser / file revision

 /* Any copyright is dedicated to the public domain.

    http://creativecommons.org/publicdomain/zero/1.0/ */

 // Bug 770239 - Load an X-Frame-Options: SAMEORIGIN page inside an <iframe>

 // inside <iframe mozbrowser>.  The two iframes will have the same origin, but

 // this page will be of a different origin.  The load should succeed.

 "use strict";

 SimpleTest.waitForExplicitFinish();

 browserElementTestHelpers.setEnabledPref(true);

 browserElementTestHelpers.addPermission();

 function runTest() {

   var iframe = document.createElement('iframe');

   SpecialPowers.wrap(iframe).mozbrowser = true;

   // The innermost page we load will fire an alert when it successfully loads.

   iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {

     ok(true, "Got alert");

     SimpleTest.finish();

   });

   document.body.appendChild(iframe);

   iframe.src = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_XFrameOptionsSameOrigin.html';

 }

 addEventListener('testready', runTest);