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chromium/third_party/blink/web_tests/external/wpt/content-security-policy/worker-src/shared-self.sub.html 

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/testharness-helper.js"></script>
<meta http-equiv="Content-Security-Policy" content="worker-src 'self'">
<script>
  var url = new URL("../support/ping.js", document.baseURI).toString();
  assert_shared_worker_is_loaded(url, "Same-origin dedicated worker allowed by 'self'.");
</script>