virtual void OnSendError(
const std::string& app_id,
const gcm::GCMClient::SendErrorDetails& send_error_details) OVERRIDE;
+ virtual void OnSendAcknowledged(const std::string& app_id,
+ const std::string& message_id) OVERRIDE;
virtual void OnConnected(const net::IPEndPoint& ip_endpoint) OVERRIDE;
virtual void OnDisconnected() OVERRIDE;