They're far from their optimized state. clip-paths can be shapes directly, classes can be put as attributes directly, etc.
Created attachment 457940 [details] Patch
Comment on attachment 457940 [details] Patch rs=me, assuming that the artwork is still identical.
Committed r293044 (249783@trunk): <https://commits.webkit.org/249783@trunk>
<rdar://problem/91992979>