A shortcut to the bookmarks page
This is just a shortcut to the bookmarks, nothing more.
When installed, it will add "Bookmarks" icon to your browser's toolbar.
Click the icon and you'll open Chrome bookmarks manager.
And that's all this "extension" does...
(There are some options available -- you can set the button to open the bookmarks page in new tab or in the current tab and, if you want, you can add it to the context menu.)