chromium/third_party/blink/web_tests/http/tests/misc/resource-timing-sizes-xhr-fetch-worker.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
fetch_tests_from_worker(
    new Worker('/misc/resources/resource-timing-sizes-xhr-fetch.js'));
</script>