Add settings VR listener service.

Bug: 22855417
Bug: 26724891

- Adds a settings panel allowing users to toggle the
  enabled/disabled state of each VrListenerService
  component installed.
- If disabled, a VrListenerService will not be bound
  from the framework, even when requested by a VR
  application.

Change-Id: I606eb712c011d160b9fbdd3c0e8fd744c653ef07

src/com/android/settings/applications/VrListenerSettings.java

@@ -0,0 +1,51 @@
+/*
+ * 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.applications;
+
+import android.provider.Settings;
+import android.service.vr.VrListenerService;
+
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.utils.ManagedServiceSettings;
+
+public class VrListenerSettings extends ManagedServiceSettings {
+    private static final String TAG = VrListenerSettings.class.getSimpleName();
+    private static final Config CONFIG = getVrListenerConfig();
+
+    private static final Config getVrListenerConfig() {
+        final Config c = new Config();
+        c.tag = TAG;
+        c.setting = Settings.Secure.ENABLED_VR_LISTENERS;
+        c.intentAction = VrListenerService.SERVICE_INTERFACE;
+        c.permission = android.Manifest.permission.BIND_VR_LISTENER_SERVICE;
+        c.noun = "vr listener";
+        c.warningDialogTitle = R.string.vr_listener_security_warning_title;
+        c.warningDialogSummary = R.string.vr_listener_security_warning_summary;
+        c.emptyText = R.string.no_vr_listeners;
+        return c;
+    }
+
+    @Override
+    protected Config getConfig() {
+        return CONFIG;
+    }
+
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsEvent.VR_MANAGE_LISTENERS;
+    }
+}