We should check once we merge a variant that we haven't created a situation where more than two or more variants contain overlapping structure sets.
<rdar://problem/45403453>
Created attachment 355369 [details] patch
Comment on attachment 355369 [details] patch r=me
Created attachment 355379 [details] patch for landing
Comment on attachment 355379 [details] patch for landing Clearing flags on attachment: 355379 Committed r238411: <https://trac.webkit.org/changeset/238411>
All reviewed patches have been landed. Closing bug.