Cryptotab for google (it works)
https://getcryptotab.com/492306 crypoto tab from google apps store works and is the 1st tab miner ive seen that keeps record of your sign in (facebook or google) and balance well plus there is a spot to put your btc pay adress which every tab miner ive seen before was mising, so the tracking used to get messed up you'd lose coin but this is not the case with this app.
How does it work?
simply add the extension on the google search bar it shows up like a Nortons' icon also a page opens up every-time you open google to give you progress, it hooks to your google or Facebook profile and also accommodates pay address and is the 1st tab I've found that saves your earned btc plus has an affiliate program