Issue 4871 - Start using ESLint for adblockplusui

firstRun.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/>.
  */
 
 /* globals checkShareResource, getDocLink, openSharePopup, E */
 
 "use strict";
 
+(function()
 {
   function onDOMLoaded()
   {
     // Set up logo image
     let logo = E("logo");
     logo.src = "skin/abp-128.png";
     let errorCallback = function()
     {
       logo.removeEventListener("error", errorCallback, false);
       // We are probably in Chrome/Opera/Safari, the image has a different path.
@@ skipping 103 matching lines @@
       }
     }
   }
 
   function openFilters()
   {
     ext.backgroundPage.sendMessage({type: "app.open", what: "options"});
   }
 
   document.addEventListener("DOMContentLoaded", onDOMLoaded, false);
-}
+}());