Can't Remove "Plugins Button" adware from Chrome on MacOS Sierra
I got infected by some freeware and have used Malwarebytes to clear out nearly everything, but there's one thing sticking -- a Chrome plugin called "Plugins Button." When I click on the Developer Mode in my extensions, it says:
ID: bfkmdpfljdpopbemfaelnflapafbflgn
(This extension is managed and cannot be removed or disabled.)
I've run Malwarebytes a bunch. I've gone into the libraries and deleted things via http://www.thesafemac.com/arg-identification/
I've deleted and reinstalled google chrome.
I found this thread which helped me locate the plugin and delete it manually, but every time I close and reopen Chrome, it reinstalls itself. I watched the folder and it only happened upon launch.
This has eaten up my whole day and most of the help out there is for PC. Any help would be much appreciated!!
MacBook Air, macOS Sierra (10.12.6)