I uninstalled it and removed it from my extensions section of my Google chrome plugins but it is still showing on my browser! I don’t know what to do. I did a full system scan with my Avast Internet Security but it came up with nothing! 
Attach your basic logs. (MBAM, FRST and aswMBR…!!)
Instructions: https://forum.avast.com/index.php?topic=53253.0