Chrome extension that syncs bookmarks from Google Bookmarks into one Chrome bookmarks folder. It can be used one-time only for importing Google Bookmarks or as an extension to sync them periodically. Simple.
Install from: https://chrome.google.com/webstore/detail/simple-google-bookmarks-s/aapfhogljejnbbgnfjchjgolfophodfi
Features
Import Google Bookmarks into Chrome Google bookmarks folder. Sync bookmarks periodically. Option to visit Google Bookmarks directly. Option to add a new bookmark in Google Bookmarks (and sync).
This is not a Google extension. I am not affiliated in any way with Google. The extension in only using the Google Bookmarks excel export and Chrome Bookmarks API.
Lite Bookmarks
If you are looking for the old version, this is under the LiteBookmarks branch at https://github.com/miscalencu/Google-Chrome-Google-Bookmarks/tree/LiteBookmarks.