Fix test case failed in SystemControlsFragmentTest

import com.android.settings.R;

import com.android.settings.testutils.XmlTestUtils;

import com.android.settings.testutils.shadow.ShadowKeyCharacterMap;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.annotation.Config;

import java.util.List;

/** Tests for {@link SystemControlsFragment}. */

@RunWith(RobolectricTestRunner.class)

@Config(shadows = {ShadowKeyCharacterMap.class})

public class SystemControlsFragmentTest {

    private final Context mContext = ApplicationProvider.getApplicationContext();