Add Google Linux Software Repositories to Ubuntu

Add Google key to apt
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub \
| apt-key add - apt-get update

Create new source repository
vi /etc/apt/sources.list.d/google.list

# Google software repository
deb http://dl.google.com/linux/deb/ stable non-free

Now you can add Google desktop / others
sudo apt-get update
sudo apt-get install google-desktop-linux

Done!