public static void RegisterChromeGcmService(this PushBroker broker, ChromePushChannelSettings channelSettings, IPushServiceSettings serviceSettings = null)
 {
     RegisterChromeGcmService(broker, channelSettings, null, serviceSettings);
 }
 public static void RegisterChromeGcmService(this PushBroker broker, ChromePushChannelSettings channelSettings, string applicationId = null, IPushServiceSettings serviceSettings = null)
 {
     broker.RegisterService <ChromeNotification>(new ChromePushService(channelSettings, serviceSettings), applicationId);
 }