@Override
  public void unregisterRoute(MediaRouter router) {
    if (mRemoteControl == null) {
      return;
    }

    router.removeRemoteControlClient(mRemoteControl);
  }
 public void removeFromMediaRouter(MediaRouter router) {
   if (null != mActualRemoteControlClient) {
     router.removeRemoteControlClient(mActualRemoteControlClient);
   }
 }