tree aa6d314a928ca9d179e6c284afe986d080c4ef7e
parent bf0bbc8742b54c2dfd842b730e8e2ec0ba7daa84
author Ruben Brunk <rubenbrunk@google.com> 1449274591 -0800
committer Ruben Brunk <rubenbrunk@google.com> 1450375757 -0800

Add a framework service tracking VR mode state.

- Implement a "VR mode" that may be enabled by a focused Activity.
- Add a system service that tracks the current VR mode state and notifies
  other core framework services of mode changes.
- Extend NotificationListenerService to allow the bind/unbind lifecycle
  of specified listeners to be triggered by system events.

Bug: 22855417
Bug: 25479708

Change-Id: I1ac8692bbb5521bb6c7cfb9d2b56b98b720f8568