Can't uninstall "GNOME Shell integration" extension after uninstalling GNOME

I installed GNOME into my Ubuntu 16.04 installation for a short amount of time. After uninstalling it (with sudo apt remove gnome-shell ubuntu-gnome-desktop), I still have the "GNOME Shell integration" extension installed into Google Chrome. Unfortunately, I can't remove the extension, because it was installed "administratively":

How may I get rid of this tumor?

sudo apt-get purge chrome-gnome-shell

Should get rid of it on Ubuntu without restarting

Figured it out.

From https://wiki.gnome.org/Projects/GnomeShellIntegrationForChrome/Installation#Troubleshooting:

sudo rm /etc/opt/chrome/policies/managed/chrome-gnome-shell.json
sudo rm /etc/chromium/policies/managed/chrome-gnome-shell.json

I also had to these steps:

1. Go to chrome://version/ and copy the profile path
2. Navigate to the profile path and navigate to the Extensions folder
3. Remove the folder named "gphhapmejobijbbhgpjhcjognlahblep"
4. Restart Chrome