commit 4409e07e970e6fd735944c0f60ab6678d2a1bb1f
author Oriol Brufau <obrufau@igalia.com> Mon Jul 27 15:03:21 2020
committer Commit Bot <commit-bot@chromium.org> Mon Jul 27 15:03:21 2020
tree 6cde9ee0f004ab43b2ed809d5df8518644c05513
parent 6e6c7b4f23eb3d87246a80068b846d69efea6420

[css-pseudo] Support text-transform in ::marker

In https://github.com/w3c/csswg-drafts/issues/4206, the CSSWG resolved
that the 'text-transform' property should apply to ::marker, and that
by default it should be set to 'none' in the UA stylesheet.
This patch implements these changes.

Note that setting it to 'none' is an observable change in LayoutNG,
since it prevents the ::marker from inheriting the 'text-transform' of
the list item. This was considered a better behavior by the CSSWG, and
it's the behavior that legacy layout already had.

LayoutListMarker, used for ::marker with 'content: normal' in legacy
layout, doesn't implement the marker text as actual text. Therefore,
'text-transform' has no effect.

Bug: 1031667

TEST=external/wpt/css/css-pseudo/marker-default-styles.html
TEST=external/wpt/css/css-pseudo/marker-text-transform-default.html
TEST=external/wpt/css/css-pseudo/marker-text-transform-uppercase.html
TEST=external/wpt/css/css-pseudo/parsing/marker-supported-properties-in-animation.html
TEST=external/wpt/css/css-pseudo/parsing/marker-supported-properties.html
TEST=http/tests/devtools/elements/styles-2/pseudo-elements.js

Change-Id: I2c2b554f521139fabb502856fedc6230aa45c787
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2315872
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Oriol Brufau <obrufau@igalia.com>
Cr-Commit-Position: refs/heads/master@{#791815}