title: window.addEventListener("message" ... not working with IE11
body: <p>I am opening a popup and this one sent a postMessage to the opener one.
  I have added a ListenerEvent to the main window for 'message' but this listener is never called in IE 11, it works with firefox.</p>
  
  <p>I already try to wait for the window, or the trick to replace the eventListener by a setInterval but I can't access data of the event in this case. And I have check all the threads that are similar to my question.
  So I just try a little and simple example to check that addEventListener 'message' is working with IE11 and it does not. </p>
  
  <p>The script in my main html page :</p>
  
  <pre><code>var popup = window.open("popup.html", "Connection", 
                  'toolbar=no, location=no, directories=no, menubar=no, status=yes, scrollbars=no, resizable=yes, copyhistory=no, '
                  + 'width=' + w + ', height=' + h + ', top=' + y + ', left=' + x);
  popup.postMessage("The user is 'bob' and the password is 'secret'",
                    "*");
                    },500);
  </code></pre>
  
  <p>The script in my popup html page :</p>
  
  <pre><code>function receiveMessage(event)
  {
      alert("OK popup");
      console.log("djedjeidjeidjiejdie");
  }
  window.addEventListener("message", receiveMessage, false);
  </code></pre>
  
  <p>So for me, the result should be an alert window that is raised when opening the popup. This is the case with firefox but not with IE11. Don't understand why.</p>