Sort imports

Having consistent import order will reduce chance of merge
conflict between internal and external master

Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b

tests/robotests/src/com/android/settings/SettingsDialogFragmentTest.java

@@ -22,6 +22,8 @@ import static org.mockito.Mockito.when;
 
 import android.app.Dialog;
 
+import androidx.fragment.app.Fragment;
+
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
 
 import org.junit.Before;
@@ -31,8 +33,6 @@ import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RuntimeEnvironment;
 
-import androidx.fragment.app.Fragment;
-
 @RunWith(SettingsRobolectricTestRunner.class)
 public class SettingsDialogFragmentTest {