<!DOCTYPE HTML>
<html>
<body>
<script>
let count = 0;
function cb() {
  count += 1;
  // Notify our parent that we are ready once the timer flood has
  // warmed up.
  if (count === 10000) {
    window.parent.postMessage('STARTED', '*');
  }
  setTimeout(cb, 0);
  setTimeout(cb, 0);
}
addEventListener('load', cb);
</script>
</body>
</html>
