The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 const Cc = Components.classes;

 const Ci = Components.interfaces;

 var gProfD = do_get_profile();

 var gDirSvc = Cc["@mozilla.org/file/directory_service;1"].

               getService(Ci.nsIProperties);

 var gPrefSvc = Cc["@mozilla.org/preferences-service;1"].

                getService(Ci.nsIPrefBranch);

 function writeTestFile(aParent, aName) {

   let file = aParent.clone();

   file.append(aName);

   file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0644);

   return file;

 }