YouTube NonStop
lawfx
***Important: This extension doesn't keep the confirmation box from popping up. It only counters it. It auto-clicks the confirmation box and the video won't get paused.*** Working on YouTube and YouTube Music! Media Keys supported! Untested (but should work) when: Video is in fullscreen, Video is in miniplayer. If you have any problems, don't hesitate to drop me an email. :)
