prefs: [dom.security.featurePolicy.experimental.enabled:true]
[idle-detection-allowed-by-feature-policy-attribute.https.sub.html]
  expected: ERROR
  [Attribute allow="idle-detection" in top-level frame can be enabled in a worker in cross-origin iframe using Feature policy "idle-detection".]
    expected: NOTRUN

  [Attribute allow="idle-detection" in top-level frame can be enabled in cross-origin iframe using Feature policy "idle-detection".]
    expected: NOTRUN

  [Attribute allow="idle-detection" in top-level frame can be enabled in a worker in same-origin iframe using Feature policy "idle-detection".]
    expected: NOTRUN

  [Attribute allow="idle-detection" in top-level frame can be enabled in same-origin iframe using Feature policy "idle-detection".]
    expected: NOTRUN

