Chrome already blocks extensions not from the webstore on Windows, unless you use a developer branch. See http://chrome.blogspot.com/2014/05/protecting-chrome-u

Chrome already blocks extensions not from the webstore on Windows, unless you use a developer branch. See http://chrome.blogspot.com/2014/05/protecting-chrome-users-from-malicious.html http://chrome.blogspot.com/2014/05/protecting-chrome-users-f...