Set app theme for Privileged Extension's Install Confirm Activity
Applies the fix from !491 (merged) into the stable branch (i.e. for 0.102.4 if/when it goes out).
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Applies the fix from !491 (merged) into the stable branch (i.e. for 0.102.4 if/when it goes out).