Chromesync, is a tool provided with every installation of Google Chrome and Chrome OS. It's purpose, is to retreive and store your browser settings, bookmarks and preferences. If you're working with several computers (Office and Home) and wish to have all of your browser data mirrored on both, Chromesync is the way to go.
To enable Chromesync: click on your account picture (If you are not signed in, this may be a blank picture of a person). Then click Turn on sync and Yes, I'm In.
Once signed in, any bookmarks, themes, and browser services will be stored in an encrypted file on Google's servers. To retreive these settings, just sign into another installation of Chrome, or a Chrome OS Notebook. They'll return automatically.