In firefox, if you 3-finger swipe, you can scroll all the way up or all the way down a webpage. Is there an add-on for this feature for Safari or Chrome? Also, I've tried looking around for a add-on similar to Tab Mix Plus for Chrome and haven't had any luck. I want to switch to Chrome since it utilizes less memory than Firefox but the extra 3-finger swipe and Tab mix plus is preventing me. Someone some shed light.