AudioManager: back to old setBluetoothA2dpOn()
AudioManager: back to old setBluetoothA2dpOn()

Come back to old versions of setBluetoothA2dpOn() and isBluetoothA2dpOn().

MediaRouter will call methods on IAudioService directly.

Change-Id: I18f0a3106bad78715ed11a6b7b4ec1d656cdae41

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base