tree 9d257fff847429b41099634b383ac38abc94b4eb
parent 367a0937d4694bf66d7ac875b3591ae901a483b2
author Koji Ishii <kojii@chromium.org> 1663192647 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1663193455 -0700

[anchor-position] Fix when OOFs are not in pre-order

When in a block-fragmentation context, OOF nodes given to
|LayoutFragmentainerDescendants| may not be in the pre-order
of the box tree. This patch sorts the |descendants| in such
cases.

Note the sorting is not cheap that it is limited only when
anchors are on OOF boxes. We haven't found cases where anchors
are on in-flow boxes and |descendants| need to be sorted at
this point.

LOW_COVERAGE_REASON=I think this is an error, all new code is covered.

Bug: 1309178
Change-Id: I2c680a03e97c9525d9f6aa521709c96b55dbafd1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3892536
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Alison Maher <almaher@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#1047118}