[Payment Request] Implement error checking for show(), abort(), and canMakePayment()
Created attachment 318688 [details] Patch
Created attachment 318690 [details] Patch
Comment on attachment 318690 [details] Patch Clearing flags on attachment: 318690 Committed r221020: <http://trac.webkit.org/changeset/221020>
All reviewed patches have been landed. Closing bug.
<rdar://problem/34014829>