How to relive the old format for Youtube without additions

All you need is a "console" your browser then enter code Cookies, who is in the bottom., Where you can access the "console" on the Google Chrome browser by pressing the button keyboard on the CTRL + SHIFT + J was then insert code cookies by CTRL + V The keyboard button is pressed Enter. But if you have Firefox, you can access the "console" by pressing the CTRL + SHIFT + K and enter the code via cookies it CTRL + V

CODE

document.cookie="VISITOR_INFO1_LIVE=qDpUsBNO0FY; expires=Thu, 2 Aug 2020 20:47:11 UTC"