And use a boolean enum for the single flag it currently has ShouldPaintMirrored.
Pull request: https://github.com/WebKit/WebKit/pull/19883
Committed 270166@main (ccfae6e68fdd): <https://commits.webkit.org/270166@main> Reviewed commits have been landed. Closing PR #19883 and removing active labels.
<rdar://problem/117899373>