bfbe0ee89d
Policies of silence mode: 1) If an active device (for A2DP or HFP) enters silence mode, the active device for that profile will be set to null. 2) If a device exits silence mode while the A2DP or HFP active device is null, the device will be set as the active device for that profile. 3) If a device is disconnected, it exits silence mode. 4) If a device is set as the active device for A2DP or HFP, while silence mode is enabled, then the device will exit silence mode. 5) If a device is in silence mode, AVRCP position change event and HFP AG indicators will be disabled. 6) If a device is not connected with A2DP or HFP, it cannot enter silence mode. Bug: 112323989 Test: Manual, runtest bluetooth Change-Id: If7f340de38c350f17c37f00a3a2e871876baa20d