[xmlhttprequest-sync-default-feature-policy.sub.html]
  expected: TIMEOUT
  [Default "sync-xhr" feature policy ["*"\] allows same-origin iframes.]
    expected: TIMEOUT

  [Feature policy "sync-xhr" can be disabled in cross-origin iframes using "allow" attribute.]
    expected: FAIL

  [Feature policy "sync-xhr" can be disabled in same-origin iframes using "allow" attribute.]
    expected: FAIL