1793936 - [wpt-sync] Sync PR 36309 - Avoid layout roots in subtrees skipped for style recalc

Status: RESOLVED FIXED

(Core :: Layout, task, P4)

Description

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

Sync web-platform-tests PR 36309 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/36309
Details from upstream follow.

Rune Lillesveen <[e-mail]> wrote:

Avoid layout roots in subtrees skipped for style recalc

Layout roots are laid out from inner to outer in LocalFrameView. DOM
mutations may have added layout roots inside size container subtrees
before style recalc. If we decide to postpone style recalc until layout
of the size container, it means we may try to layout a root inside a
subtree skipped for style recalc. That causes a DCHECK and possibly
other issues.

Bug: 1371820
Change-Id: Ia48890c08aacfe7b9a3e660817702abce0570564
Reviewed-on: https://chromium-review.googlesource.com/3934847
WPT-Export-Revision: 5ae4ccb4d5e090366dc33f844c1aa7333bfd7178

Comment 1

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

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=ca9a91d115484e05db4d6114baf0ccfebf8c6729

Comment 2

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

CI Results

Ran 0 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 1 tests

Status Summary

Firefox

PASS: 1

Chrome

PASS: 1

Safari

PASS: 1

Links

GitHub PR Head
GitHub PR Base

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/68eeea8148c0
[wpt PR 36309] - Avoid layout roots in subtrees skipped for style recalc, a=testonly

Comment 4

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/68eeea8148c0