Move lockscreen bypass setting to Settings > Security > Face unlock

Fixes: 134700640

Test: atest FaceSettingsLockscreenBypassPreferenceControllerTest
Test: enabling/disabling setting through Settings > Security > Face unlock
      works as expected
Test: preference controller no longer seen in Settings > Display > Lock screen display

Change-Id: I54807ad92fac62398a2b9dab93dd638775a09c8d

src/com/android/settings/biometrics/face/FaceSettingsLockscreenBypassPreferenceController.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2019 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.biometrics.face;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.hardware.face.FaceManager;
+import android.provider.Settings;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.core.TogglePreferenceController;
+
+public class FaceSettingsLockscreenBypassPreferenceController extends TogglePreferenceController {
+
+    @VisibleForTesting
+    protected FaceManager mFaceManager;
+
+    public FaceSettingsLockscreenBypassPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+        if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_FACE)) {
+            mFaceManager = context.getSystemService(FaceManager.class);
+        }
+    }
+
+    @Override
+    public boolean isChecked() {
+        boolean defaultValue = mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_faceAuthDismissesKeyguard);
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD, defaultValue ? 1 : 0) != 0;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD, isChecked ? 1 : 0);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (mFaceManager != null && mFaceManager.isHardwareDetected()) {
+            return mFaceManager.hasEnrolledTemplates() ? AVAILABLE : DISABLED_DEPENDENT_SETTING;
+        } else {
+            return UNSUPPORTED_ON_DEVICE;
+        }
+    }
+}