Add Game settings support.

Add Game settings page under Apps so that users can access game related
features and toggle settings.

Bug: b/185822999
Test: make ROBOTEST_FILTER=GameSettingsPreferenceControllerTest RunSettingsRoboTests
Change-Id: I923ba70536b7f68b5330a508b8dabf27e33f4c55

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

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 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.content.Context;
+import android.text.TextUtils;
+
+import androidx.preference.Preference;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.overlay.FeatureFactory;
+
+/** Contains logic that deals with showing Game Settings in app settings. */
+public class GameSettingsPreferenceController extends BasePreferenceController {
+
+    @VisibleForTesting
+    final GameSettingsFeatureProvider mGameSettingsFeatureProvider;
+
+    public GameSettingsPreferenceController(Context context, String key) {
+        super(context, key);
+        mGameSettingsFeatureProvider =
+                FeatureFactory.getFactory(context).getGameSettingsFeatureProvider();
+    }
+
+    GameSettingsPreferenceController(Context context, String key,
+            GameSettingsFeatureProvider gameSettingsFeatureProvider) {
+        super(context, key);
+        mGameSettingsFeatureProvider = gameSettingsFeatureProvider;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mGameSettingsFeatureProvider.isSupported(mContext)
+                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (TextUtils.equals(getPreferenceKey(), preference.getKey())) {
+            mGameSettingsFeatureProvider.launchGameSettings(mContext);
+            return true;
+        }
+        return super.handlePreferenceTreeClick(preference);
+    }
+}