[Juha]

A while ago I remember hearing in some podcast from googler that they internally have separate source code management system (not related to Google Code). I wouldn't be surprised it he was talking about this one and they finally decided to make it public. Killing Google Code was probably just because not many people used it (externally or internally).

[aiiane]

It's far more likely the Googler was referring to Google's variant of Perforce, which is what is used for most internal projects.