Little grey boxes on the bottom sides of chrome

So I'm not sure where it started or came from but there's this little grey boxes on the bottom sides of my browsing window in Chrome. They always say like "connecting" or like a bunch of code. I'm not sure. and if I click on it'll go away but if i scroll it comes back and then sometimes when I go on facebook the box gets huge and its so damn annoying. Any advice on getting it to stay away?