chromium/third_party/blink/web_tests/external/wpt/html/browsers/windows/resources/noreferrer-window-name.html

<script>
  addEventListener("storage", function(e) {
    if(e.newValue === "close") {
      close()
    }
  })
  localStorage.setItem("window" + location.hash.slice(1), "tralala")
</script>