Merge PPR1.180522.001

Conflicts:
      src/com/android/bluetooth/btservice/PhonePolicy.java
      src/com/android/bluetooth/hfp/HeadsetService.java
      src/com/android/bluetooth/hfp/HeadsetStateMachine.java

Change-Id: Ib115ef65345aacb861d8a34994c451f49cbe8e20