Chris Martin Threw a Willy Wonka Themed 40th Birthday Party For Himself

Fresh off the "hysterically--perhaps even endearingly--corny" song with The Chainsmokers, Coldplay frontman Chris Martin turned 40 years old. He celebrated with a themed party that might also be tagged as endearingly corny. On Friday, Martin turned his Malibu estate into a rendition of Willy Wonka's chocolate factory, in what US Weekly describes as "lavish" set dressings. One aerial photo…