[Payment Request] Implement Apple Pay merchant validation
Created attachment 323394 [details] Patch
Created attachment 323395 [details] Patch
Created attachment 323421 [details] Patch
Comment on attachment 323421 [details] Patch Clearing flags on attachment: 323421 Committed r223193: <https://trac.webkit.org/changeset/223193>
All reviewed patches have been landed. Closing bug.
<rdar://problem/34936548>