<html>
<script>
if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.waitUntilDone();
  testRunner.globalFlag = false;
}

var w = window.open("http://127.0.0.1:8000/misc/resources/content-iframe.html");
w.opener = null;

function wait_to_start() {
  var child_window_opened;

  // polling testRunner.globalFlag or w.document
  if (window.testRunner) {
    child_window_opened = testRunner.globalFlag;
  } else {
    // polling w.document is not very reliable cross browsers,
    // it works in chrome for manual testsing.
    // We might want to change it to using postMessage when it
    // is supported.
    child_window_opened = !w.document;
  }

  if (!child_window_opened) {
    setTimeout(wait_to_start, 30);
    return;
  }

  var e = document.getElementById('console');
  e.innerHTML = w.opener == null ? 'PASS' : 'FAIL';

  w.close();

  if (window.testRunner)
    testRunner.notifyDone();
}

window.onload = wait_to_start;

</script>
<body>
This tests that following code works in Chrome:
<pre>
var w = window.open(...);
w.opener = null;
</pre>
After new page finishes loading, its opener should stay as null.

<p>
<div id="console">Running ...<div>
</body>
</html>