1821380 - [wpt-sync] Sync PR 38909 - Do not allow first-line-inherited styles to start transitions

Status: RESOLVED FIXED

(Core :: Layout: Generated Content, Lists, and Counters, task, P4)

Description

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

Sync web-platform-tests PR 38909 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/38909
Details from upstream follow.

Rune Lillesveen <[e-mail]> wrote:

Do not allow first-line-inherited styles to start transitions

If a computed property value is inherited from ::first-line styles into

the styles for inline boxes on the first line, no transitions should
be started on those elements since those inherited values are not part
of those elements' computed styles.

However, transitions and animations running on the element without any
::first-line styles applied still need to be applied for ::first-line
rendering.

The way we accomplish that is to pass a parameter through StyleRequest
for that behavior.

Bug: 1422029
Change-Id: Ic957d4a596771d6ee5303bf5b43f8321ce47c034

Reviewed-on: https://chromium-review.googlesource.com/4315914
WPT-Export-Revision: 3db16074cd12f65e2b4174951a8aa6f768a69fea

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=f540dc15a57f5cedcff1af9f7a70ef7697a01fef

Comment 2

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

Test result changes from PR not available.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/23bf7986c89e
[wpt PR 38909] - Do not allow first-line-inherited styles to start transitions, a=testonly

Comment 4

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

Test result changes from PR not available.

Comment 5

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/23bf7986c89e