ApnSettingsActivity shows the ActionBar

- Use the Theme.Settings.NoActionBar
- Update test cases

Fixes: 331308440
Test: atest com.android.settings.UtilsTest SettingsActivityTest
Change-Id: Ica93e765690707654ae651261ac8d236ed8e1d58

AndroidManifest.xml

@@ -152,7 +152,7 @@
             android:name=".SettingsApplication"
             android:label="@string/settings_label"
             android:icon="@drawable/ic_launcher_settings"
-            android:theme="@style/Theme.Settings"
+            android:theme="@style/Theme.Settings.NoActionBar"
             android:hardwareAccelerated="true"
             android:requiredForAllUsers="true"
             android:supportsRtl="true"

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

@@ -27,6 +27,7 @@ import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import android.app.ActionBar;
 import android.app.ActivityManager;
 import android.content.Context;
 import android.content.Intent;
@@ -114,6 +115,15 @@ public class SettingsActivityTest {
         assertThat(((ListenerFragment) fragments.get(1)).mOnActivityResultCalled).isTrue();
     }
 
+    @Test
+    public void getActionBar_hasNoActionBar() {
+        final SettingsActivity activity = Robolectric.buildActivity(SettingsActivity.class).get();
+
+        final ActionBar actionBar = activity.getActionBar();
+
+        assertThat(actionBar).isNull();
+    }
+
     public static class ListenerFragment extends Fragment implements OnActivityResultListener {
 
         private boolean mOnActivityResultCalled;

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

@@ -30,7 +30,6 @@ import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
-import android.app.ActionBar;
 import android.app.admin.DevicePolicyManager;
 import android.app.admin.DevicePolicyResourcesManager;
 import android.content.ComponentName;
@@ -56,11 +55,9 @@ import android.os.storage.StorageManager;
 import android.os.storage.VolumeInfo;
 import android.util.IconDrawableFactory;
 import android.widget.EditText;
-import android.widget.ScrollView;
 import android.widget.TextView;
 
 import androidx.core.graphics.drawable.IconCompat;
-import androidx.fragment.app.FragmentActivity;
 
 import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.testutils.shadow.ShadowLockPatternUtils;
@@ -71,7 +68,6 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.robolectric.Robolectric;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
@@ -270,17 +266,6 @@ public class UtilsTest {
         Utils.setActionBarShadowAnimation(null, null, null);
     }
 
-    @Test
-    public void setActionBarShadowAnimation_shouldSetElevationToZero() {
-        final FragmentActivity activity = Robolectric.setupActivity(FragmentActivity.class);
-        final ActionBar actionBar = activity.getActionBar();
-
-        Utils.setActionBarShadowAnimation(activity, activity.getLifecycle(),
-                new ScrollView(mContext));
-
-        assertThat(actionBar.getElevation()).isEqualTo(0.f);
-    }
-
     @Test
     public void isSettingsIntelligence_IsSI_returnTrue() {
         final String siPackageName = mContext.getString(