Bug 1042691: Add A2DP/AVRCP result-handler infrastructure (under bluetooth2/), r=btian
Bug 1042691: Asynchronous init and cleanup of A2DP/AVRCP (under bluetooth2/), r=btian
Bug 1042691: Asynchronous A2DP connect/disconnect (under bluetooth2/), r=btian
Bug 1042691: Asynchronous AVRCP response interfaces (under bluetooth2/), r=btian
Bug 1042691: Asynchronous |BluetoothAvrcpInterface::SetVolume| (under bluetooth2/), r=btian