[SpeechRecognition-availableOnDevice.https.html]
  [SpeechRecognition.available resolves with a string value for on-device.]
    expected: FAIL

  [SpeechRecognition.available rejects in a detached context for on-device.]
    expected: FAIL

  [SpeechRecognition.available resolves to 'unavailable' for on-device if 'on-device-speech-recognition' Permission Policy is 'none'.]
    expected: FAIL

  [SpeechRecognition.available should resolve to 'unavailable' for on-device in a cross-origin iframe.]
    expected: FAIL