Issue 1602 - Use ES6 generators instead of legacy generators

lib/notification.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 76 matching lines @@
     });
 
     downloader.onExpirationChange = this._onExpirationChange.bind(this);
     downloader.onDownloadSuccess = this._onDownloadSuccess.bind(this);
     downloader.onDownloadError = this._onDownloadError.bind(this);
   },
 
   /**
    * Yields a Downloadable instances for the notifications download.
    */
-  _getDownloadables: function()
+  _getDownloadables: function*()
   {
     let downloadable = new Downloadable(Prefs.notificationurl);
     if (typeof Prefs.notificationdata.lastError === "number")
       downloadable.lastError = Prefs.notificationdata.lastError;
     if (typeof Prefs.notificationdata.lastCheck === "number")
       downloadable.lastCheck = Prefs.notificationdata.lastCheck;
     if (typeof Prefs.notificationdata.data === "object" && "version" in Prefs.notificationdata.data)
       downloadable.lastVersion = Prefs.notificationdata.data.version;
     if (typeof Prefs.notificationdata.softExpiration === "number")
       downloadable.softExpiration = Prefs.notificationdata.softExpiration;
@@ skipping 220 matching lines @@
   triggerQuestionListeners: function(id, approved)
   {
     if (!(id in listeners))
       return;
     let questionListeners = listeners[id];
     for (let listener of questionListeners)
       listener(approved);
   }
 };
 Notification.init();