Extend DeviceRouteController API with selectRoute method

package com.android.server.media;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.content.Context;

import android.media.AudioManager;

import android.media.IAudioRoutesObserver;

import android.media.IAudioService;

import android.media.MediaRoute2Info;

import android.os.ServiceManager;

                onDeviceRouteChangedListener);

    }

    /**

     * Select the route with the given built-in or wired {@link MediaRoute2Info.Type}.

     *

     * <p>If the type is {@code null} then unselects the route and falls back to the default device

     * route observed from

     * {@link com.android.server.audio.AudioService#startWatchingRoutes(IAudioRoutesObserver)}.

     *

     * @param type device type. May be {@code null} to unselect currently selected route.

     * @return whether the selection succeeds. If the selection fails the state of the controller

     * remains intact.

     */

    boolean selectRoute(@Nullable @MediaRoute2Info.Type Integer type);

    /**

     * Returns currently selected device (built-in or wired) route.

     *

        mDeviceRoute = createRouteFromAudioInfo(newAudioRoutes);

    }

    @Override

    public boolean selectRoute(@Nullable Integer type) {

        // No-op as the controller does not support selection from the outside of the class.

        return false;

    }

    @Override

    @NonNull

    public synchronized MediaRoute2Info getDeviceRoute() {