commit 757dcc189067d644ae24bcb6f1c86354bbc7774e
author Koji Ishii <kojii@chromium.org> Mon Dec 10 06:01:36 2018
committer Commit Bot <commit-bot@chromium.org> Mon Dec 10 06:01:36 2018
tree 13a2e2e3048e939dba4e4fe7bb1242132d44dc6c
parent 79f71470c8ee2b69a35fe8192eb01b8b3d5ca02b

[LayoutNG] Stop clearning NeedsLayout on block in MarkLineBoxesDirty

This patch stops clearning NeedsLayout on the LayoutBLockFlow
in MarkLineBoxesDirty.

MarkLineBoxesDirty turns NeedsLayout of inline boxes and text
into IsDirty on existing line boxes, to determine which line
boxes are dirty and which are reusable. Since it marks line
boxes as dirty, it's safe to clear NeedsLayout on objects
within the line box, but it's not proper to clear NeedsLayout
on LayoutBlockFlow.

When layout is done, it will be cleared, so this was just
redundant.

Bug: 904291
Change-Id: I1f9e767c6d7a3ec5fc9ba6c2b4090581ece5123b
Reviewed-on: https://chromium-review.googlesource.com/c/1366472
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Aleks Totic <atotic@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615053}