Merge "Reset VolumeControlService after the test runs" into tm-qpr-dev

import com.android.bluetooth.TestUtils;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

        mNativeInterface = VolumeControlNativeInterface.getInstance();

    }

    @After

    public void tearDown() {

        VolumeControlService.setVolumeControlService(null);

    }

    @Test

    public void onConnectionStateChanged() {

        int state = VolumeControlStackEvent.CONNECTION_STATE_CONNECTED;