Removed emergency info and add user when locked from Users settings.

If new IA is enabled,  Emergency Info and Add user when locked has been moved to
Users & accounts page, so Users page should not show them.

Also fix the issue that update for the add user when locked switch does
not persist correctly.

Change-Id: I26d9f59d0f4bf3fd36a7d07d13f95127b40a8a3e
Fix: 33703736
Test: make RunSettingsRoboTests

tests/robotests/src/com/android/settings/users/UserSettingsTest.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+package com.android.settings.users;
+
+import android.content.Context;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.FakeFeatureFactory;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class UserSettingsTest {
+
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+
+    private FakeFeatureFactory mFeatureFactory;
+    private UserSettings mSetting;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        FakeFeatureFactory.setupForTest(mContext);
+        mFeatureFactory = (FakeFeatureFactory) FakeFeatureFactory.getFactory(mContext);
+        mSetting = new UserSettings();
+    }
+
+    @Test
+    public void testShowEmergencyInfoAndAddUsers_IAEnabled_shouldReturnFalse() {
+        when(mFeatureFactory.dashboardFeatureProvider.isEnabled()).thenReturn(true);
+        assertThat(mSetting.showEmergencyInfoAndAddUsersWhenLock(mContext)).isFalse();
+    }
+
+    @Test
+    public void testShowEmergencyInfoAndAddUsers_IADisabled_shouldReturnTrue() {
+        when(mFeatureFactory.dashboardFeatureProvider.isEnabled()).thenReturn(false);
+        assertThat(mSetting.showEmergencyInfoAndAddUsersWhenLock(mContext)).isTrue();
+    }
+
+}