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chromium/third_party/blink/web_tests/external/wpt/html/browsers/history/the-history-interface/history_forward-1.html 

<!doctype html>
<script src="history.js"></script>
<script>
  onunload = function() {}

  onload = function() {
    if (!opener.started) {
      queue_next();
    } else {
      opener.pages.push(id);
      history.forward();
    }
  };
</script>