It's confusing and always broken. The only build time dependency now is libepoxy and we require it even with USE_OPENGL_OR_ES=OFF, so we can remove it.
Pull request: https://github.com/WebKit/WebKit/pull/21096
Committed 271345@main (f9660aaab50c): <https://commits.webkit.org/271345@main> Reviewed commits have been landed. Closing PR #21096 and removing active labels.