Issue 5028 - Use browser namespace

notification.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 66 matching lines @@
 
   messageElement.addEventListener("click", event =>
   {
     let link = event.target;
     while (link && link !== messageElement && link.localName !== "a")
       link = link.parentNode;
     if (!link)
       return;
     event.preventDefault();
     event.stopPropagation();
-    chrome.tabs.create({url: link.href});
+    browser.tabs.create({url: link.href});
   });
 
   let notificationElement = document.getElementById("notification");
   notificationElement.className = notification.type;
   notificationElement.hidden = false;
   notificationElement.addEventListener("click", event =>
   {
     if (event.target.id == "notification-close")
       notificationElement.classList.add("closing");
     else if (event.target.id == "notification-optout" ||
              event.target.id == "notification-hide")
     {
       if (event.target.id == "notification-optout")
         Notification.toggleIgnoreCategory("*", true);
 
       notificationElement.hidden = true;
       notification.onClicked();
     }
   }, true);
 }, false);