Fall is a browser extension that prevents you from getting into that situation. Fall will automatically close untouched browser tabs over time and keep a history of your closed tabs. This way Fall let's you focus on what's important. Closed browser tabs can be easily recovered from a popover that is only a click away. Fall even allows you to restore tabs that you have manually closed. Check out the screenshots below:
Safari (Chrome should be very easy to add, maybe you can help? ;))
MIT