DRM Dash Support

Im adding Media 3 to a tester app since we have an app that is on a very old version of Exoplayer.

Since we need to update soon im testing DRM with our widevine streams

i imported from our older app and getting issues with

DefaultHttpDataSourceFactory() Not found what replaced it?

and in old code we hade
..........
return new DashMediaSource.Factory(BuildHttpDataSourceFactoryWithToken(context))
.setDrmSessionManager(drmSessionManager)
.createMediaSource(MediaItem.fromUri(mediaSourceUri));

private static DefaultHttpDataSourceFactory BuildHttpDataSourceFactoryWithToken(Context context) {
    DefaultBandwidthMeter BANDWIDTH_METER = new DefaultBandwidthMeter();  //deprecated
    String userAgent = Util.getUserAgent(context, "App Name");
    DefaultHttpDataSourceFactory httpDataSourceFactory = new DefaultHttpDataSourceFactory(userAgent, 
    BANDWIDTH_METER); //deprecated
    String token = AuthenticationHelper.getToken(context);
    httpDataSourceFactory.getDefaultRequestProperties().set("Authorization", "token);
    return httpDataSourceFactory;
}

What do i use to replace this?
.........
other issue:

 return headers(context!!)?.let {
            DashMediaSource.Factory(it)
                .setDrmSessionManager(drmSessionManager). ///Not found?
                .createMediaSource(MediaItem.fromUri(mediaSourceUri))
        }

//This is to get the Media Source
// then we

mPlayer.setMediaSource(mediaSource);....
  @androidx.annotation.OptIn(androidx.media3.common.util.UnstableApi::class)
    fun getDashMediaSource(mediaSourceUri: Uri, context: Context?): MediaSource? {
        var drmSchemeUuid: UUID? = null
        val drmSessionManager: DrmSessionManager
        try {
            drmSchemeUuid = DemoUtil.getDrmUuid(DRM_SCHEME)
        } catch (e: UnsupportedDrmException) {
            e.printStackTrace()
        }
        val licenseDataSourceFactory: HttpDataSource.Factory = DefaultHttpDataSourceFactory()
        val drmCallback = HttpMediaDrmCallback(DRM_LICENSE_URL, licenseDataSourceFactory)
        drmSessionManager = DefaultDrmSessionManager.Builder()
            .setUuidAndExoMediaDrmProvider(drmSchemeUuid!!, FrameworkMediaDrm.DEFAULT_PROVIDER)
            .setMultiSession(true)
            .build(drmCallback)
        return headers(context!!)?.let {
            DashMediaSource.Factory(it)
                .setDrmSessionManager(drmSessionManager)
                .createMediaSource(MediaItem.fromUri(mediaSourceUri))
        }
    }