[scrollsnapchanging-on-programmatic-root-scroll.tentative.html]
  [scrollsnapchanging fires on programmatic scrolls that changes a scroller's snap targets.]
    expected: FAIL

  [Document.scrollsnapchanging fires on programmatic scrolls that changes ascroller's snap targets.]
    expected: FAIL

  [scrollsnapchanging does not fire on programmatic scrolls that don't trigger a change in snap targets.]
    expected: FAIL