Scatchy Extension + black line when searching

[Frame of Mind]

So today, as I seen a black line when I am searching something: Screenshot or when waiting for stuff to load, I check my extensions.

I already sadly deleted it, but it was something about using my google drive/docs stuff Offline. It could read everything I had copied/pasted. So sorta of a keylogger?

The point is, how can I check if I downloaded that accidently or if it is legit, cause my AV results are 100% fine but the quarantined adwares I have (long time been).

Thanks in advance.