1847527 - [wpt-sync] Sync PR 41360 - Avoid marking ancestor layout objects during pre-paint.

Status: RESOLVED FIXED

(Core :: Layout: Columns, task, P4)

Description

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

Sync web-platform-tests PR 41360 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/41360
Details from upstream follow.

Morten Stenshorne <[e-mail]> wrote:

Avoid marking ancestor layout objects during pre-paint.

If we really need to mark an object for paint invalidation checking
during pre-paint, stay away from the ancestors, since we might already
be done with them, and therefore end up leaving them dirty "forever".

Even if they are ancestors, LayoutObject-tree-wise, it doesn't have to
mean that are ancestors in the physical fragment tree.

Bug: 1451185
Change-Id: I9fef344619cfe6a99d80dd49e904fd41dd464167
Reviewed-on: https://chromium-review.googlesource.com/4755525
WPT-Export-Revision: b5bef607936be1d8eb20a62c2f5d0570a81b90f6

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=39146cc16f1339c9b254c82973bcd363a63a7e9d

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/3ff2e523658d
[wpt PR 41360] - Avoid marking ancestor layout objects during pre-paint., a=testonly

Comment 4

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/3ff2e523658d