Chrome gets Ads Popping up

From last week I get unfamiliar ads apearing in all pages while using Chrome which they say "Ads by DNSUnlocker".I searched for it and it seems this is a known adware infecting Windows PCs and there are some information about it (source-1, source-2) Anyway, how can I get rid of it? I checked my Chrome extension and there was nothing unfamiliar. One of the steps in the Windows solution is to RESET Chrome settings! I really don't want to reset my settings since I need them and redoing all the preferences is not easy. I need some help to disinfect my system and preferably, find the root cause of it.

 

What has this got to do with SpywareBlaster?

 

And Googling "Ads by DNSUnlocker" gives: http://malwaretips.com/blogs/ads-by-dns-unlocker-removal/

 

.How to remove Ads by DNS-Unlocker from your browser? You may do it by first uninstalling DNS Unocker version 1.3 from the list of legally installed applications. Finally, you must get rid of all suspicous add-ons (extensions) from your browser related to this adware..https://www.youtube.com/watch?v=VymiA_DCKUs