1783767 - [wpt-sync] Sync PR 35390 - ContainingFragmentationContextRoot() for multicols that are spanners

Status: RESOLVED FIXED

(Core :: Layout, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 35390 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/35390
Details from upstream follow.

Alison Maher <[e-mail]> wrote:

ContainingFragmentationContextRoot() for multicols that are spanners

In CL:3795714, we updated ContainingFragmentationContextRoot() to
return the fragmentation context above the closest one if there was a
column spanner found. However, if that column spanner is also a
fragmentation context, we should continue to return that context
rather than the one above since any contents will continue to
participate in the closest context in such cases.

Bug: 1349763
Change-Id: I8631e15d1c367c3d01b28658db2ed9cdaf844327
Reviewed-on: https://chromium-review.googlesource.com/3817446
WPT-Export-Revision: c69b11c0b028e27337cb5e77fcb72d083caba630

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=6474616a8ec3a07fd55f99622a2689fb0906c307

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/61b083ff212d
[wpt PR 35390] - ContainingFragmentationContextRoot() for multicols that are spanners, a=testonly

Comment 3

[Cristina Cozmuta (:CrissCozmuta)]

https://hg.mozilla.org/mozilla-central/rev/61b083ff212d