Issue 4353 - Remove deprecated __proto__ syntax

lib/filterNotifier.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
  * @fileOverview This component manages listeners and calls them to distributes
  * messages about filter changes.
  */
 
 let {EventEmitter} = require("events");
+let {desc} = require("coreUtils");
 
 const CATCH_ALL = "__all";
 
 /**
  * This class allows registering and triggering listeners for filter events.
  * @class
  */
-exports.FilterNotifier =
-{
-  __proto__: new EventEmitter(),
-
+exports.FilterNotifier = Object.create(new EventEmitter(), desc({
   /**
    * Adds a listener
    *
    * @deprecated use FilterNotifier.on(action, callback)
    */
   addListener: function(/**function(action, item, newValue, oldValue)*/ listener)
   {
     let listeners = this._listeners[CATCH_ALL];
     if (!listeners || listeners.indexOf(listener) == -1)
       this.on(CATCH_ALL, listener);
@@ skipping 19 matching lines @@
    *                 "filter.added", "filter.removed", "filter.moved",
    *                 "filter.disabled", "filter.hitCount", "filter.lastHit")
    * @param {Subscription|Filter} item item that the change applies to
    * @deprecated use FilterNotifier.emit(action)
    */
   triggerListeners: function(action, item, param1, param2, param3)
   {
     this.emit(action, item, param1, param2, param3);
     this.emit(CATCH_ALL, action, item, param1, param2, param3);
   }
-};
+}));