Add compat call for getting the rotation from the window config

/*

 * Copyright (C) 2017 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.systemui.shared.system;

import android.content.res.Configuration;

/**

 * Wraps the Configuration to access the window configuration.

 */

public class ConfigurationCompat {

    public static int getWindowConfigurationRotation(Configuration c) {

        return c.windowConfiguration.getRotation();

    }

}