How do you get the Skype extension on Google Chrome?
For some reason it's not in the Chrome Web Store.
Skype’s Click and Call plug-in for Google Chrome can be downloaded from Skype's website.
I came here looking for the same answer, and after coming up disappointed, I made one that served my needs: http://ishiboo.com/SkypeControl/
I only made it work on Windows however. Hope it helps!