[create.tentative.https.html]
  max-asserts: 2
  [navigator.credentials.create() frame just returns null.]
    expected: FAIL

  [navigator.credentials.create() same-origin iframe just returns null.]
    expected: FAIL

  [navigator.credentials.create() cross-origin iframe results in null.]
    expected: FAIL

  [navigator.credentials.create() ignores mediations.]
    expected: FAIL

  [navigator.credentials.create() ignores mediations in same-origin iframe.]
    expected: FAIL

  [navigator.credentials.create() ignores mediations in cross-origin iframe.]
    expected: FAIL

  [navigator.credentials.create() rejects if called with an aborted controller.]
    expected: FAIL

  [navigator.credentials.create() rejects if called with an aborted controller in same-origin iframe.]
    expected: FAIL

  [navigator.credentials.create() rejects if called with an aborted controller in cross-origin iframe.]
    expected: FAIL

  [Adding mediations together with abort signal respects the abort signal.]
    expected: FAIL