small bar around fullscreen videos

[JuanBar]

So I have looked around a bit and I don't see my particular issue anywhere, when I try to play a video on my second monitor and put it in fullscreen it goes fullscreen but then there is a small bar around the edge where I can see through to my desktop
idk what to do halp

 

[Seankay]

I hope this script will help you out: https://productforums.google.com/forum/#!topic/chrome/ubfFnbm0nE8