The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

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

 MARIONETTE_TIMEOUT = 60000;

 SpecialPowers.addPermission("mobileconnection", true, document);

 // Permission changes can't change existing Navigator.prototype

 // objects, so grab our objects from a new Navigator

 let ifr = document.createElement("iframe");

 let connection;

 ifr.onload = function() {

   connection = ifr.contentWindow.navigator.mozMobileConnections[0];

   ok(connection instanceof ifr.contentWindow.MozMobileConnection,

      "connection is instanceof " + connection.constructor);

   testGetCallBarringOption();

 };

 document.body.appendChild(ifr);

 function testGetCallBarringOption() {

   let option = {'program': 0, 'password': '', 'serviceClass': 0};

   let request = connection.getCallBarringOption(option);

   request.onsuccess = function() {

     ok(request.result);

     ok('enabled' in request.result, 'should have "enabled" field');

     cleanUp();

   };

   request.onerror = function() {

     // Call barring is not supported by current emulator.

     cleanUp();

   };

 }

 function cleanUp() {

   SpecialPowers.removePermission("mobileconnection", document);

   finish();

 }