Merge "Clear native before removing HeadsetService" into tm-qpr-dev

        // Step 3: Initialize system interface

        mSystemInterface = HeadsetObjectsFactory.getInstance().makeSystemInterface(this);

        // Step 4: Initialize native interface

        setHeadsetService(this);

        mMaxHeadsetConnections = mAdapterService.getMaxConnectedAudioDevices();

        mNativeInterface = HeadsetObjectsFactory.getInstance().getNativeInterface();

        // Add 1 to allow a pending device to be connecting or disconnecting

        filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);

        registerReceiver(mHeadsetReceiver, filter);

        // Step 7: Mark service as started

        setHeadsetService(this);

        mStarted = true;

        BluetoothDevice activeDevice = getActiveDevice();

        String deviceAddress = activeDevice != null ?

                AdapterService.ACTIVITY_ATTRIBUTION_NO_ACTIVE_DEVICE_ADDRESS;

        mAdapterService.notifyActivityAttributionInfo(getAttributionSource(), deviceAddress);

        mStarted = false;

        setHeadsetService(null);

        // Step 6: Tear down broadcast receivers

        unregisterReceiver(mHeadsetReceiver);

        synchronized (mStateMachines) {

        }

        // Step 4: Destroy native interface

        mNativeInterface.cleanup();

        setHeadsetService(null);

        // Step 3: Destroy system interface

        mSystemInterface.stop();

        // Step 2: Stop handler thread