After 266683@main we were seeing issues with use of OptionSet in RenderStyle.h as we only had a forward declaration.
Pull request: https://github.com/WebKit/WebKit/pull/16530
Committed 266736@main (241927320742): <https://commits.webkit.org/266736@main> Reviewed commits have been landed. Closing PR #16530 and removing active labels.
<rdar://problem/113645097>