chromium/src/third_party/blink/web_tests/http/tests/priorities/resources/parser-blocking-script.html

<script src="common.js"></script>
<script>
  observeAndReportResourceLoadPriority(new URL('../../resources/dummy.js', location));
</script>

<script src="../../resources/dummy.js" onload="reportLoaded()" onerror="reportFailure()"></script>