Issue 4021 - The logic that checks for Edge is incorrect in adblockplusedge

ext/common.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/>.
  */
 
 
 (function()
 {
   // Both Edge and Mozilla Web Extensions use the namespace 'browser' instead of 'chrome'
-  if (!("chrome" in window))
+  if (typeof browser != 'undefined')
     window.chrome = window.browser;
 
   window.ext = {};
 
   var EventTarget = ext._EventTarget = function()
   {
     this._listeners = [];
   };
   EventTarget.prototype = {
     addListener: function(listener)
@@ skipping 12 matching lines @@
       var results = [];
       var listeners = this._listeners.slice();
 
       for (var i = 0; i < listeners.length; i++)
         results.push(listeners[i].apply(null, arguments));
 
       return results;
     }
   };
 })();