Fix build failure in MockNfcService.mm.
Created attachment 378890 [details] Patch v1
<rdar://problem/55412493>
Comment on attachment 378890 [details] Patch v1 Keith Rollin verified this fixed the build on his Mac => cq+.
Comment on attachment 378890 [details] Patch v1 Clearing flags on attachment: 378890 Committed r249916: <https://trac.webkit.org/changeset/249916>
All reviewed patches have been landed. Closing bug.