Topic 11502 - EHH fails to recognize the first browser window opened

lib/windowObserver.js

 /*
  * This file is part of the Adblock Plus build tools,
  * Copyright (C) 2006-2012 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 57 matching lines @@
     if (!this._shutdownHandler)
       return;
 
     onShutdown.remove(this._shutdownHandler);
     this._shutdownHandler();
     this._shutdownHandler = null;
   },
 
   observe: function(subject, topic, data)
   {
-    // Make sure page is not about:blank (work-around for bug 795961)
     if (topic == "chrome-document-global-created")
     {
       let window = subject.QueryInterface(Ci.nsIDOMWindow);
       if (this._when == "start")
       {
         this._listener.applyToWindow(window);
         return;
       }
 
       let event = (this._when == "ready" ? "DOMContentLoaded" : "load");
       let listener = function()
       {
         window.removeEventListener(event, listener, false);
         if (this._shutdownHandler)
           this._listener.applyToWindow(window);
       }.bind(this);
       window.addEventListener(event, listener, false);
     }
   },
 
   QueryInterface: XPCOMUtils.generateQI([Ci.nsISupportsWeakReference, Ci.nsIObserver])
 };