[Apple Pay] CanMakePaymentsWithActiveCard and OpenPaymentSetup should be async messages
<rdar://problem/48745636>
Created attachment 364154 [details] Patch
Created attachment 364158 [details] Patch
Created attachment 364161 [details] Patch
Created attachment 364163 [details] Patch
Comment on attachment 364163 [details] Patch r=me
Comment on attachment 364163 [details] Patch Clearing flags on attachment: 364163 Committed r242681: <https://trac.webkit.org/changeset/242681>
All reviewed patches have been landed. Closing bug.