Issue 3486 - Issue reporter: don`t access content window to reload the page

lib/ui.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 778 matching lines @@
   {
     let wnd = Services.wm.getMostRecentWindow("abp:sendReport");
     if (wnd)
       wnd.focus();
     else
     {
       let uri = this.getCurrentLocation(window);
       if (uri)
       {
         let {getBrowser} = require("appSupport");
-        window.openDialog("chrome://adblockplus/content/ui/sendReport.xul", "_blank", "chrome,centerscreen,resizable=no", getBrowser(window).contentWindow, uri);
+        let browser = getBrowser(window);
+        if ("selectedBrowser" in browser)
+          browser = browser.selectedBrowser;
+        window.openDialog("chrome://adblockplus/content/ui/sendReport.xul", "_blank", "chrome,centerscreen,resizable=no", browser.contentWindow, uri, browser);
       }
     }
   },
 
   /**
    * Opens our contribution page.
    */
   openContributePage: function(/**Window*/ window)
   {
     this.loadDocLink("contribute", window);
@@ skipping 1091 matching lines @@
   ["abp-command-contribute-hide", "command", UI.hideContributeButton.bind(UI)],
   ["abp-command-toggleshownotifications", "command", Notification.toggleIgnoreCategory.bind(Notification, "*", null)]
 ];
 
 onShutdown.add(function()
 {
   for (let window of UI.applicationWindows)
     if (UI.isBottombarOpen(window))
       UI.toggleBottombar(window);
 });