Fix some observed sandbox violations in the WebContent process on macOS.
rdar://problem/49498040
Created attachment 366734 [details] Patch
Comment on attachment 366734 [details] Patch r=me
Comment on attachment 366734 [details] Patch Thanks for reviewing!
Comment on attachment 366734 [details] Patch Clearing flags on attachment: 366734 Committed r243900: <https://trac.webkit.org/changeset/243900>
All reviewed patches have been landed. Closing bug.