Part one of an effort to split the giant CSSPropertyParserHelpers.h/cpp up, starting with pulling out Color consumers and all the dependencies it requires.
<rdar://problem/126571161>
Pull request: https://github.com/WebKit/WebKit/pull/27348
Committed 277585@main (6955e8112f27): <https://commits.webkit.org/277585@main> Reviewed commits have been landed. Closing PR #27348 and removing active labels.