desktop-webapp-browser-extension
A few months ago I started work on a Google Chrome/ium extension for integrating Chrome apps into GNOME Shell. The idea is that, whenever you install a Chrome app, a .desktop file is created in ~/.local/share/applications, for them to show up as normal applications.
Also, for desktop shortcuts for “normal” web pages, since Chrome/ium uses the favicon from the pages, the icons look really ugly on GNOME Shell’s overview. So, this extension also tries to retrieve a higher resolution icon and uses it if found, and if not, retrieves a snapshot from the page and uses that as the icon, making it look much nicer in the overview.
So, nothing really magic, but discussing it with some team mates, I thought it could be helpful for other people, so hence this public announcement 
The code can be found here.
Next step, when I have time and find out how, is to submit this to the Google Chrome store, but for now, you can just build it and install the .crx file into your Chrome/ium.