chromium/third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/report-only-frame.sub.html

<!DOCTYPE html>
<html>
<meta name="timeout" content="long">
<head>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <title>Blocked frames are reported correctly</title>
</head>
<body>
  <iframe src="support/content-security-policy-report-only.sub.html?policy=report-uri%20/reporting/resources/report.py%3Fop=put%26reportID={{$id:uuid()}}%3B%20frame-ancestors%20'none'"></iframe>
  <script async defer src="../support/checkReport.sub.js?reportField=violated-directive&reportValue=frame-ancestors%20'none'&reportID={{$id}}"></script>
</body>
</html>