Apply top intro preference in Settings app (1/n)

Based on content in footer, we need to convert some footers
to top info prefernce.

Test: Run robo test and see the screens
Bug: 173087905
Change-Id: Ie62a503481f9d385f5468896fba8f607cb3437d3

src/com/android/settings/display/NightDisplayTopIntroPreferenceController.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2018 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.display;
+
+import android.content.Context;
+import android.hardware.display.ColorDisplayManager;
+
+import com.android.settings.core.BasePreferenceController;
+
+/**
+ * NightDisplayTopIntroPreferenceController can control the visibility of night display top info
+ * preference.
+ */
+public class NightDisplayTopIntroPreferenceController extends BasePreferenceController {
+
+    public NightDisplayTopIntroPreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return ColorDisplayManager.isNightDisplayAvailable(mContext)
+                ? AVAILABLE_UNSEARCHABLE : UNSUPPORTED_ON_DEVICE;
+    }
+}