Here is the 'Anchor.js' being injected into the page. There is nothing malicious in the code. I can't comment on why this is injected in the first place.
Nice, I'm not sure what's going on there.. But considering the fact someone getting threaten by the company,there must be something with this script :D
Thanks for the suggestions. Actually someone else has published the extension on my behalf. I will ask him to add the image at the time of a major release.
The extension runs with background permissions so you don't need to start chrome for using it. It starts automatically at user-login to OS. The projects is open sourced under MIT license.