am 25d81a4c: am eebf6895: Merge "Revert "Re-@hide activity-level...
am 25d81a4c: am eebf6895: Merge "Revert "Re-@hide activity-level FLAG_IMMERSIVE and helpers."" into klp-dev
* commit '25d81a4c':
Revert "Re-@hide activity-level FLAG_IMMERSIVE and helpers."