testing/web-platform/tests/service-workers/service-worker/resources/register-closed-window-iframe.html


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<html>
<head>
<script>
window.addEventListener('message', function(evt) {
  if (evt.data === 'START') {
    var w = window.open('./');
    var sw = w.navigator.serviceWorker;
    w.close();
    w = null;
    sw.register('doesntmatter.js');
    parent.postMessage('OK', '*');
  }
});
</script>
</head>
</html>