Set root cause issue for display:contents with table failure.

The root cause of the failure is that we do not merge anonymous tables
which become siblings when other layout boxes are removed from the
layout tree. Update TestExpectations accordingly.

Bug: 181374, 657748
Change-Id: I8920f43630835410289f8903fbbe3a7b2835af9e
Reviewed-on: https://chromium-review.googlesource.com/796475
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#520108}
1 file changed