<!DOCTYPE HTML>
<html>
<head>
  <title>Focus test - child window</title>
  <script type="application/javascript" src="file_fullscreen-utils.js"></script>
</head>
<body>

<script type="application/javascript">

function enterFullscreen() {
  addFullscreenErrorContinuation(() => { opener.enteredFullscreen(false); });

  addFullscreenChangeContinuation("enter", () => {
    opener.enteredFullscreen(true);
  });

  document.body.requestFullscreen();
}

</script>
</pre>
</body>
</html>
