Add a required syscall-mach message to the message filter in the WebContent sandbox on iOS.
Created attachment 395699 [details] Patch
<rdar://problem/61397928>
Comment on attachment 395699 [details] Patch r=me
Comment on attachment 395699 [details] Patch Thanks for reviewing!
Committed r259648: <https://trac.webkit.org/changeset/259648> All reviewed patches have been landed. Closing bug and clearing flags on attachment 395699 [details].