[webkit-changes] [WebKit/WebKit] c7bdf3: return a createCommaSeparated() in CSSPropertyBack...

[Karl Dubost]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: c7bdf39661727360505861e0b39b38b22701923e
      https://github.com/WebKit/WebKit/commit/c7bdf39661727360505861e0b39b38b22701923e
  Author: Karl Dubost <karlcow at apple.com>
  Date:   2023-10-13 (Fri, 13 Oct 2023)

  Changed paths:
    M LayoutTests/imported/w3c/web-platform-tests/css/compositing/parsing/background-blend-mode-computed-multiple-expected.txt
    M Source/WebCore/css/ComputedStyleExtractor.cpp

  Log Message:
  -----------
  return a createCommaSeparated() in CSSPropertyBackgroundBlendMode
https://bugs.webkit.org/show_bug.cgi?id=263051
rdar://116838342

Reviewed by Simon Fraser.

A very simple fix to align with the spec. Currently WebKit returns
a space separated list, when it should return a comma separated list.
see https://drafts.fxtf.org/compositing-1/#background-blend-mode

Computed value:	as specified

For having a full pass on the current tests,
it will be necessary to solve a wider bug
about coordinating list properties
See https://bugs.webkit.org/show_bug.cgi?id=263104

* LayoutTests/imported/w3c/web-platform-tests/css/compositing/parsing/background-blend-mode-computed-multiple-expected.txt:
* Source/WebCore/css/ComputedStyleExtractor.cpp:
(WebCore::ComputedStyleExtractor::valueForPropertyInStyle const):

Canonical link: https://commits.webkit.org/269325@main