In a longer version of this video ( this video is a short version), you can see at 02:54 min. that Calvin Harris uses Ozone 5 by Izotope. You can also see the initial letters of the plugin start with "Ozone 5..", which stands for Ozone 5 by Izotope.
Overall, really powerful, but what makes it stand out is the endless info you receive from numerous sources. They even have books to lead you on the right path with their product and make this easier for anyone wanting to make music.