[link-header-preload-non-html.html]
  [XHTML documents should respect preload Link headers]
    expected: FAIL

  [plain text documents should respect preload Link headers]
    expected: FAIL

  [image documents should respect preload Link headers]
    expected: FAIL

  [media documents should respect preload Link headers]
    expected: FAIL

  [invalid image documents should respect preload Link headers]
    expected: FAIL