You can see him here on a Berry/Clapton version of the song. Johnson shown from about the 1:30 mark.
Nice tribute by Keith Richards to the trademarked Berry bent-knee walk, too.
Great! People seem to think R and R started with Chuck and Elvis, but it started much earlier! Just listen to Johnnie, or Ammons, Meade Lux Lewis, Cripp;e Clarence, Pete Johnson. Those guys ROCKED OUT!