Add the new content protection preference option and subpage in Settings -> Security & privacy -> More security & privacy settings.

Bug: 302189945
Test: robotests
m -j256 Settings
atest SettingsRoboTests:ContentProtectionPreferenceControllerTest
atest SettingsRoboTests:ContentProtectionPreferenceFragmentTest

Change-Id: I620d73f8674c1340f9b11cd910620f1d5afb0ec1

src/com/android/settings/security/ContentProtectionPreferenceController.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2023 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.security;
+
+import static android.view.contentprotection.flags.Flags.settingUiEnabled;
+
+import android.content.Context;
+
+import androidx.annotation.NonNull;
+
+import com.android.settings.core.BasePreferenceController;
+
+public class ContentProtectionPreferenceController extends BasePreferenceController {
+
+    public ContentProtectionPreferenceController(@NonNull Context context, @NonNull String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+      // TODO(b/306565942): Add a resource value check.
+      return settingUiEnabled() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+}