Issue 3465 - Don`t access content document when opening new tab

lib/appSupport.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 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 209 matching lines @@
     exports.isKnownWindow = function ff_isKnownWindow(window)
     {
       return (window.document.documentElement.getAttribute("windowtype") == "navigator:browser");
     };
 
     exports.getBrowser = (window) => window.gBrowser;
 
     exports.addTab = function ff_addTab(window, url, event)
     {
       if (event)
-        window.openNewTabWith(url, exports.getBrowser(window).contentDocument, null, event, false);
+        window.openNewTabWith(url, null, null, event, false);
       else
         window.gBrowser.loadOneTab(url, {inBackground: false});
     };
 
     exports.contentContextMenu = "contentAreaContextMenu";
 
     exports.defaultToolbarPosition = {
       parent: "nav-bar"
     };
 
@@ skipping 27 matching lines @@
   {
     exports.isKnownWindow = function sm_isKnownWindow(window)
     {
       let type = window.document.documentElement.getAttribute("windowtype");
       return (type == "navigator:browser" || type == "mail:3pane" || type == "mail:messageWindow");
     };
 
     exports.addTab = function sm_addTab(window, url, event)
     {
       if (event || !("gBrowser" in window))
-        window.openNewTabWith(url, ("gBrowser" in window ? window.gBrowser.contentDocument : null), null, event, false);
+        window.openNewTabWith(url, null, null, event, false);
       else
         window.gBrowser.loadOneTab(url, {inBackground: false});
     };
 
     exports.getBrowser = function sm_getBrowser(window)
     {
       if ("gBrowser" in window)
         return window.gBrowser;
       else if ("getMessageBrowser" in window)
         return window.getMessageBrowser();
@@ skipping 553 matching lines @@
             event.state = {id: require("info").addonID};
             browser._contentWindow.dispatchEvent(event);
           });
         });
       }, true);
     };
 
     break;
   }
 }