Issue 5028 - Use browser namespace

lib/stats.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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 49 matching lines @@
   {
     page.browserAction.setBadge({
       color: badgeColor,
       number: blocked
     });
   }
 });
 
 Prefs.on("show_statsinicon", () =>
 {
-  chrome.tabs.query({}, tabs =>
+  browser.tabs.query({}, tabs =>
   {
     for (let tab of tabs)
     {
       let page = new ext.Page(tab);
       let badge = null;
 
       if (Prefs.show_statsinicon)
       {
         let blocked = blockedPerPage.get(page);
         if (blocked)
         {
           badge = {
             color: badgeColor,
             number: blocked
           };
         }
       }
 
       page.browserAction.setBadge(badge);
     }
   });
 });
 
 port.on("stats.getBlockedPerPage",
         message => getBlockedPerPage(new ext.Page(message.tab)));