[usb-allowed-by-feature-policy-attribute.https.sub.html]
  [Feature policy "usb" can be enabled in cross-origin iframes using "allowed" attribute.]
    expected: FAIL

  [Feature policy "usb" can be enabled in same-origin iframe using allow="usb" attribute]
    expected: FAIL

  [Feature policy "usb" can be enabled in cross-origin iframe using allow="usb" attribute]
    expected: FAIL