Google Chrome is a web browser and is the default browser on Nexus and many other devices. Chrome data on the device is somewhat unique, in that, it contains data not just from the device, but from all devices on which the user has logged in to Chrome. This means that it is entirely possible (even very likely) that data from the user browsing on their desktop computer will be found in the databases on their phone. However, this also leads to huge amounts of data for an examiner to sort through, but that's a good problem to have.
Files of interest:
Google Profile Picture.png
All of the files listed earlier in the
/app_chrome/Default folder, except for the one
.png file, Bookmarks, and Preferences, are SQLite databases despite the lack of a file extension.