Revert "Revert "Revert "Show "Add users from lock screen" dependent on secure lock screen."""

This reverts commit fa92269759d9b652d3d7ae6815bf19b06d41ab68.

Reason for revert: b/152587665 - Toggle should always be visible

Bug: 152587665
Test: m RunSettingsRoboTests ROBOTEST_FILTER=AddUserWhenLockedPreferenceControllerTest
Change-Id: I93e58b36965387187b4d1ed03ca2f572728157b9
diff --git a/src/com/android/settings/users/AddUserWhenLockedPreferenceController.java b/src/com/android/settings/users/AddUserWhenLockedPreferenceController.java
index df2f54e..f931fa4 100644
--- a/src/com/android/settings/users/AddUserWhenLockedPreferenceController.java
+++ b/src/com/android/settings/users/AddUserWhenLockedPreferenceController.java
@@ -16,24 +16,20 @@
 package com.android.settings.users;
 
 import android.content.Context;
-import android.os.UserHandle;
 import android.provider.Settings;
 
 import androidx.preference.Preference;
 
-import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.core.TogglePreferenceController;
 import com.android.settingslib.RestrictedSwitchPreference;
 
 public class AddUserWhenLockedPreferenceController extends TogglePreferenceController {
 
     private final UserCapabilities mUserCaps;
-    private final LockPatternUtils mLockPatternUtils;
 
     public AddUserWhenLockedPreferenceController(Context context, String key) {
         super(context, key);
         mUserCaps = UserCapabilities.create(context);
-        mLockPatternUtils = new LockPatternUtils(context);
     }
 
     @Override
@@ -57,8 +53,6 @@
             return DISABLED_FOR_USER;
         } else if (mUserCaps.disallowAddUser() || mUserCaps.disallowAddUserSetByAdmin()) {
             return DISABLED_FOR_USER;
-        } else if (!mLockPatternUtils.isSecure(UserHandle.myUserId())) {
-            return CONDITIONALLY_UNAVAILABLE;
         } else {
             return mUserCaps.mUserSwitcherEnabled ? AVAILABLE : CONDITIONALLY_UNAVAILABLE;
         }
diff --git a/tests/robotests/src/com/android/settings/users/AddUserWhenLockedPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/users/AddUserWhenLockedPreferenceControllerTest.java
index 7bfee10..b27b636 100644
--- a/tests/robotests/src/com/android/settings/users/AddUserWhenLockedPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/users/AddUserWhenLockedPreferenceControllerTest.java
@@ -18,7 +18,6 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Answers.RETURNS_DEEP_STUBS;
-import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -28,8 +27,6 @@
 
 import androidx.preference.PreferenceScreen;
 
-import com.android.internal.widget.LockPatternUtils;
-import com.android.settings.core.BasePreferenceController;
 import com.android.settings.testutils.shadow.ShadowUserManager;
 import com.android.settingslib.RestrictedSwitchPreference;
 
@@ -42,7 +39,6 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
-import org.robolectric.util.ReflectionHelpers;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(shadows = {ShadowUserManager.class})
@@ -55,16 +51,13 @@
     private Context mContext;
     private ShadowUserManager mUserManager;
     private AddUserWhenLockedPreferenceController mController;
-    private LockPatternUtils mLockPatternUtils;
 
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
         mContext = RuntimeEnvironment.application;
-        mLockPatternUtils = mock(LockPatternUtils.class);
         mUserManager = ShadowUserManager.getShadow();
         mController = new AddUserWhenLockedPreferenceController(mContext, "fake_key");
-        ReflectionHelpers.setField(mController, "mLockPatternUtils", mLockPatternUtils);
         mUserManager.setSupportsMultipleUsers(true);
     }
 
@@ -76,7 +69,6 @@
     @Test
     public void displayPref_NotAdmin_shouldNotDisplay() {
         mUserManager.setIsAdminUser(false);
-        when(mLockPatternUtils.isSecure(anyInt())).thenReturn(true);
         final RestrictedSwitchPreference preference = mock(RestrictedSwitchPreference.class);
         when(preference.getKey()).thenReturn(mController.getPreferenceKey());
         when(mScreen.findPreference(preference.getKey())).thenReturn(preference);
@@ -89,7 +81,6 @@
     @Test
     public void updateState_NotAdmin_shouldNotDisplayPreference() {
         mUserManager.setIsAdminUser(false);
-        when(mLockPatternUtils.isSecure(anyInt())).thenReturn(true);
         final RestrictedSwitchPreference preference = mock(RestrictedSwitchPreference.class);
 
         mController.updateState(preference);
@@ -102,10 +93,8 @@
         mUserManager.setIsAdminUser(true);
         mUserManager.setUserSwitcherEnabled(true);
         mUserManager.setSupportsMultipleUsers(true);
-        when(mLockPatternUtils.isSecure(anyInt())).thenReturn(true);
         final AddUserWhenLockedPreferenceController controller =
                 new AddUserWhenLockedPreferenceController(mContext, "fake_key");
-        ReflectionHelpers.setField(controller, "mLockPatternUtils", mLockPatternUtils);
         final RestrictedSwitchPreference preference = mock(RestrictedSwitchPreference.class);
 
         controller.updateState(preference);
@@ -154,40 +143,4 @@
         assertThat(Global.getInt(mContext.getContentResolver(), Global.ADD_USERS_WHEN_LOCKED, 0))
                 .isEqualTo(0);
     }
-
-    @Test
-    public void updateState_insecureLockScreen_shouldNotDisplayPreference() {
-        mUserManager.setIsAdminUser(true);
-        mUserManager.setUserSwitcherEnabled(true);
-        mUserManager.setSupportsMultipleUsers(true);
-        when(mLockPatternUtils.isSecure(anyInt())).thenReturn(false);
-        final AddUserWhenLockedPreferenceController controller =
-                new AddUserWhenLockedPreferenceController(mContext, "fake_key");
-        ReflectionHelpers.setField(controller, "mLockPatternUtils", mLockPatternUtils);
-        final RestrictedSwitchPreference preference = mock(RestrictedSwitchPreference.class);
-
-        controller.updateState(preference);
-
-        verify(preference).setVisible(false);
-        assertThat(controller.getAvailabilityStatus()).isEqualTo(
-                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
-    }
-
-    @Test
-    public void updateState_secureLockScreen_shouldDisplayPreference() {
-        mUserManager.setIsAdminUser(true);
-        mUserManager.setUserSwitcherEnabled(true);
-        mUserManager.setSupportsMultipleUsers(true);
-        when(mLockPatternUtils.isSecure(anyInt())).thenReturn(true);
-        final AddUserWhenLockedPreferenceController controller =
-                new AddUserWhenLockedPreferenceController(mContext, "fake_key");
-        ReflectionHelpers.setField(controller, "mLockPatternUtils", mLockPatternUtils);
-        final RestrictedSwitchPreference preference = mock(RestrictedSwitchPreference.class);
-
-        controller.updateState(preference);
-
-        verify(preference).setVisible(true);
-        assertThat(controller.getAvailabilityStatus()).isEqualTo(
-                BasePreferenceController.AVAILABLE);
-    }
 }