RESTRICT AUTOMERGE Implement advanced vpn ui in vpn settings

Bug: 220684478
Test: atest -c VpnSettingsTest

Change-Id: If89de16d02cb8b1f387b8f388f8fcf82ad39066b

src/com/android/settings/vpn2/AdvancedVpnFeatureProvider.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 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.vpn2;
+
+import android.content.Context;
+
+/**
+ * Feature Provider used in vpn usage
+ */
+public interface AdvancedVpnFeatureProvider {
+
+    /**
+     * Returns package name of advanced vpn.
+     */
+    String getAdvancedVpnPackageName();
+
+    /**
+     * Returns {@code true} advanced vpn is supported.
+     */
+    boolean isAdvancedVpnSupported(Context context);
+
+    /**
+     * Returns the title of advanced vpn preference group.
+     */
+    String getAdvancedVpnPreferenceGroupTitle(Context context);
+
+    /**
+     * Returns the title of vpn preference group.
+     */
+    String getVpnPreferenceGroupTitle(Context context);
+}