A new SMB implementation of ChromeOS File System Provider has been released officially. This is a great app, because this is using Smbclient native code written by Samba Team internally, therefore, it will be able to bring more stable and secure than my implementation. Also, it will support Kerberos Authentication. That is, most users should use the new implementation, especially for Enterprise environment.
The development team members has contacted to me continuously. I want to say "Congrats!" with big voice.