Is Chrome's sync not a blob?

I tried to find information about it online, but the official documentation [0] is less than helpful to say the least. I'm guessing when they say "stuff", that's a euphemism for blob, but fuck if I know, maybe they are just trying to be hip in their documentation. After all, it's also business time, in case you didn't know.

Currently downloading the Chromium source code, to see if that's more helpful, but I kind of doubt it...

[0]: https://www.chromium.org/developers/design-documents/sync