Import css/css-color tests from WPT
Created attachment 416952 [details] Patch
Looks like reference html for a bunch of these are wrong, filed https://github.com/w3c/csswg-drafts/issues/5832.
<rdar://problem/73002231>
Created attachment 418243 [details] Patch
Created attachment 418298 [details] Patch
Filed webkit.org/b/220928 to track fixing the failing tests.
Committed r271798: <https://trac.webkit.org/changeset/271798> All reviewed patches have been landed. Closing bug and clearing flags on attachment 418298 [details].