How to backup your Google Chrome profile
But if you're looking for a simpler solution, you might want to check out Google Chrome Backup, a free utility that lets you create, backup, and restore profiles.
Backing up a profile works the way you would expect it to. Google Chrome Backup will attempt to locate your existing profile and all you have to do is right click on it and select backup and choose a destination directory. A much cooler feature is the ability to create new profiles. Just click the new profile button and you can create a new profile with separate settings and browser history. You can later choose between profiles by launching Google Chrome Backup and selecting your profile from the application.