[to-javascript-url-script-src.html]
  expected: TIMEOUT
  [<iframe src='javascript:'> blocked without 'unsafe-inline'.]
    expected: TIMEOUT

  [<iframe> navigated to 'javascript:' blocked without 'unsafe-inline'.]
    expected: TIMEOUT

  [<iframe src='...'> with 'unsafe-inline' navigated to 'javascript:' blocked in this document]
    expected: TIMEOUT

  [<iframe src='...'> without 'unsafe-inline' navigated to 'javascript:' blocked in this document.]
    expected: TIMEOUT

