Migrate frameworks/base/services/tests/servicestests to androidx.test

See go/jetpack-test-android-migration

cherrypicked from ag/4608401

Test: atest FrameworksServicesTests
Change-Id: I2d9641c681489135aa3167bb4c9b1296a1a6a4f7
diff --git a/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java b/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
index ef0e27b..cfef51c 100644
--- a/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
+++ b/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
@@ -30,6 +30,7 @@
 import static android.view.WindowManager.LayoutParams.TYPE_BASE_APPLICATION;
 import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR;
 import static android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION;
+
 import static com.android.server.wm.WindowContainer.POSITION_TOP;
 
 import static org.hamcrest.Matchers.is;
@@ -42,25 +43,26 @@
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
 import android.annotation.SuppressLint;
 import android.content.res.Configuration;
 import android.graphics.Rect;
 import android.os.SystemClock;
 import android.platform.test.annotations.Presubmit;
-import android.support.test.filters.FlakyTest;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
 import android.util.DisplayMetrics;
 import android.util.SparseIntArray;
 import android.view.DisplayCutout;
 import android.view.MotionEvent;
 import android.view.Surface;
 
+import androidx.test.filters.FlakyTest;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
 import com.android.server.wm.utils.WmDisplayCutout;
 
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;