Add display white balance setting

Bug: 111215474
Test: make RunSettingsRoboTests -j100
Change-Id: Icf31ff820008740312ad811d0eda72fd3fb90a63

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

@@ -0,0 +1,46 @@
+/*
+ * 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 android.os.UserHandle;
+import android.provider.Settings.Secure;
+import com.android.settings.core.TogglePreferenceController;
+
+public class DisplayWhiteBalancePreferenceController extends TogglePreferenceController {
+
+    public DisplayWhiteBalancePreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return ColorDisplayManager.isDisplayWhiteBalanceAvailable(mContext) ?
+                AVAILABLE : DISABLED_FOR_USER;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return Secure.getIntForUser(mContext.getContentResolver(),
+                Secure.DISPLAY_WHITE_BALANCE_ENABLED, 0, UserHandle.USER_CURRENT) == 1;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        Secure.putIntForUser(mContext.getContentResolver(), Secure.DISPLAY_WHITE_BALANCE_ENABLED,
+                isChecked ? 1 : 0, UserHandle.USER_CURRENT);
+        return true;
+    }
+}