Merge "Unregister user listener when observers are inactive" into rvc-dev am:...
Merge "Unregister user listener when observers are inactive" into rvc-dev am: 38b57e5d am: 5486748c am: 06f6401a am: 01a4d40a
Change-Id: Ic459f79d41cc3d79d2470a4ae0ea282d85e64f8a