The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2b33b53351841caa993e404712c7eda7e42a2668

commit 2b33b53351841caa993e404712c7eda7e42a2668
Author: Koji Ishii <kojii@chromium.org>
Date: Fri Sep 28 18:17:10 2018

Reland "[LayoutNG] Make constraint space for column balancing intermediate"

This is a reland of 5cae37b5f84223f8f361d3dfaf639d6b85fdf37b

Two tests that were changed from Failure to Crash turned out
to be flaky, they do not crash on linux-xenial-rel.
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/linux-xenial-rel/3698

Original change's description:
> [LayoutNG] Make constraint space for column balancing intermediate
>
> Fragment caching and paint needs to know if fragments created
> for a constraint space are for the regular layout that are to
> be painted, or it's for intermediate computation.
>
> Since the layout results for column balancing should not be
> painted, this patch marks so.
>
> This change alone doesn't fix all weird paint data
> inconsistencies when block fragmentation is turned on. Other
> issues need further investigation.
>
> Bug:  714962 
> Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
> Change-Id: I14d44ca10fd23726f2c08be45b10c2b0abe16bf7
> Reviewed-on: https://chromium-review.googlesource.com/1250685
> Commit-Queue: Koji Ishii <kojii@chromium.org>
> Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#595051}

TBR=mstensho@chromium.org

Bug:  714962 ,  890326 
Change-Id: I3ed406ee0ab34f63e3c5b6a7352dac44274014f9
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Reviewed-on: https://chromium-review.googlesource.com/1251682
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595159}
[modify] https://crrev.com/2b33b53351841caa993e404712c7eda7e42a2668/third_party/WebKit/LayoutTests/TestExpectations
[modify] https://crrev.com/2b33b53351841caa993e404712c7eda7e42a2668/third_party/blink/renderer/core/layout/ng/ng_column_layout_algorithm.cc