[webkit-changes] [WebKit/WebKit] 09df07: Update named colors list to match CSS Color 4

[Sam Weinig]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 09df074a4a8861c5fa7ba160368f6fb1ea1890b0
      https://github.com/WebKit/WebKit/commit/09df074a4a8861c5fa7ba160368f6fb1ea1890b0
  Author: Sam Weinig <weinig at apple.com>
  Date:   2022-09-25 (Sun, 25 Sep 2022)

  Changed paths:
    M LayoutTests/imported/w3c/web-platform-tests/css/css-color/parsing/system-color-valid-expected.txt
    M Source/WebCore/css/CSSValueKeywords.in
    M Source/WebCore/css/StyleColor.cpp
    M Source/WebCore/css/StyleColor.h
    M Source/WebCore/css/html.css
    M Source/WebCore/rendering/RenderTheme.cpp

  Log Message:
  -----------
  Update named colors list to match CSS Color 4
https://bugs.webkit.org/show_bug.cgi?id=245533
<rdar://100287586>

Reviewed by Darin Adler.

Added new system colors from CSS Color 4 with the following default
platform agnostic values:

  ButtonBorder
    white (matching existing ActiveBorder and InactiveBorder values).
  SelectedItem
    lightGray (matching existing Menu value)
  SelectedItemText
    black (matching existing *Text values)
  Mark
    yellow (matching background-color of <mark> in UA stylesheet)
  MarkText
    black (matching color of <mark> in UA stylesheet)
  AccentColor
    sRGB { 0, 122, 255 } (matching color of system-control-accent)
  AccentColorText
    black (matching existing *Text values)

As with other system colors, it may make sense to specialize
these per-platform, but this change does not aim to do that.

Also re-organized CSSValueKeywords.in to group some related
color names together, and added comments to help clarify what
set things belong to.

As a way of organizing, and in preparation for an upcoming
change to deprecated system colors, the deprecated system
colors were grouped together and a helper function added.

As we now have a named colors Mark and MarkText, the UA stylesheet
for <mark> was updated to use the named colors (no observable
change in behavior though, as the colors still resolve to yellow
and black).

* Source/WebCore/css/CSSValueKeywords.in:
* Source/WebCore/css/StyleColor.cpp:
(WebCore::isVGAPaletteColor):
(WebCore::StyleColor::isAbsoluteColorKeyword):
(WebCore::StyleColor::isSystemColorKeyword):
(WebCore::StyleColor::isDeprecatedSystemColorKeyword):
* Source/WebCore/css/StyleColor.h:
* Source/WebCore/css/html.css:
* Source/WebCore/rendering/RenderTheme.cpp:
(WebCore::RenderTheme::systemColor const):

Canonical link: https://commits.webkit.org/254840@main