chromium/third_party/blink/web_tests/external/wpt/content-security-policy/navigate-to/child-navigates-parent-allowed.html

<!DOCTYPE html>

<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>

<body>
<script>
  var t = async_test("Test that the child can navigate the parent because the relevant policy belongs to the navigation initiator (in this case the child, which has the policy `navigate-to 'self'`)");
  window.onmessage = t.step_func_done(function(e) {
    assert_equals(e.data.result, 'success');
  });
</script>

<iframe srcdoc="<iframe src='support/navigate_parent.sub.html?csp=navigate-to%20%27self%27'>">

</body>