Merge "MediaRouteProviderService: Release callback in onUnbind()" into mnc-ub-dev
am: 36e5f96

* commit '36e5f96d64a72e09c962151257cbb3276fd9b324':
  MediaRouteProviderService: Release callback in onUnbind()

Change-Id: I6574143b8ed5dd95213aa7285ab37cd47cff82ab