[Cocoa,EME] -outputObscuredDueToInsufficientExternalProtection KVO will set OutputObscured for all attached Sessions.
Created attachment 408008 [details] Patch
Committed r266635: <https://trac.webkit.org/changeset/266635> All reviewed patches have been landed. Closing bug and clearing flags on attachment 408008 [details].
<rdar://problem/68363987>