[preferences-reducedData.tentative.https.html]
  expected: ERROR
  [navigator.preferences.reducedData supported]
    expected: FAIL

  [navigator.preferences.reducedData.override supported]
    expected: FAIL

  [navigator.preferences.reducedData.value supported]
    expected: FAIL

  [navigator.preferences.reducedData.validValues supported]
    expected: FAIL

  [navigator.preferences.reducedData.requestOverride() with invalid value throws]
    expected: NOTRUN

  [navigator.preferences.reducedData.clearOverride() supported]
    expected: NOTRUN

  [navigator.preferences.reducedData.requestOverride(null) works like clearOverride()]
    expected: NOTRUN

  [navigator.preferences.reducedData.requestOverride('') works like clearOverride()]
    expected: NOTRUN

  [navigator.preferences.reducedData.requestOverride() updates (prefers-reduced-data)]
    expected: NOTRUN

  [navigator.preferences.reducedData fires change event when requesting override]
    expected: FAIL

  [navigator.preferences.reducedData fires change event when requesting override (without value change)]
    expected: NOTRUN

  [navigator.preferences.reducedData fires change event when clearing override]
    expected: NOTRUN

  [navigator.preferences.reducedData fires change event when clearing override (without value change)]
    expected: NOTRUN