[snapchanging-on-user-scroll.tentative.html]
  expected: TIMEOUT
  [touch scrolling fires snapchanging.]
    expected: FAIL

  [mouse wheel scroll triggers snapchanging.]
    expected: FAIL

  [scrollbar dragging fires snapchanging.]
    expected: FAIL

  [keyboard scroll triggers snapchanging.]
    expected: FAIL

  [snapchanging fires as scroll moves through different snap targets.]
    expected: TIMEOUT

  [snapchanging doesn't fire if scroll doesn't reach different snap targets.]
    expected: NOTRUN