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/. */

 this.EXPORTED_SYMBOLS = ["OfflineAppCacheHelper"];

 Components.utils.import('resource://gre/modules/LoadContextInfo.jsm');

 const Cc = Components.classes;

 const Ci = Components.interfaces;

 this.OfflineAppCacheHelper = {

   clear: function() {

     var cacheService = Cc["@mozilla.org/netwerk/cache-storage-service;1"].getService(Ci.nsICacheStorageService);

     var appCacheStorage = cacheService.appCacheStorage(LoadContextInfo.default, null);

     try {

       appCacheStorage.asyncEvictStorage(null);

     } catch(er) {}

   }

 };