Just removing some unneeded casts and using nullopt.
Created attachment 332307 [details] Patch
Comment on attachment 332307 [details] Patch r=me
Comment on attachment 332307 [details] Patch Clearing flags on attachment: 332307 Committed r227757: <https://trac.webkit.org/changeset/227757>
All reviewed patches have been landed. Closing bug.
<rdar://problem/37002109>