[initial-content-replacement.html]
  [Content synchronously added to <iframe> with src='' won't get replaced]
    expected: FAIL

  [Content synchronously added to <iframe> with src='about:blank' won't get replaced]
    expected: FAIL

  [Content synchronously added to <iframe> with src='about:blank#foo' won't get replaced]
    expected: FAIL

  [Content synchronously added to <iframe> with src='about:blank?foo' won't get replaced]
    expected: FAIL

  [Content synchronously added to window.open('about:blank')-ed document won't get replaced]
    expected: FAIL

  [Content synchronously added to window.open('about:blank?foo')-ed document won't get replaced]
    expected: FAIL