[css-tables] Make table's max-content honor captions' min-content

Table's min-content already honored it.

We'd apparently never been bitten before by tables occasionally having
min-content > max-content. A new DCHECK in LayoutNG exposed it.

Bug: 857185
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: I49009a4988fbf38c1bf745a4f028e4e8b050804b
Reviewed-on: https://chromium-review.googlesource.com/1121251
Commit-Queue: David Grogan <dgrogan@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574595}
5 files changed