Make AppContext immutable and race-free (#15984)
This updates AppContext per the recommendations in #15352 Fixes #15352
T
Todd Volkert committed
8d11f5c763808fe440ac13610f16be3e357661af
Parent: 4226bff
Committed by GitHub <noreply@github.com>
on 3/28/2018, 5:58:28 PM