Starbucks Corp. (NASDAQ:SBUX) has recently been in the news for its major management shake-up, with CEO Laxman Narasimhan being replaced by Brian Niccol, the CEO of Chipotle Mexican Grill (NYSE:CMG). The new leadership is expected to play a pivotal role in Starbucks’ turnaround, according to Jim Cramer. What Happened: Cramer, in his show Mad Money, discussed the significance of the new CEO for Starbucks. He believes that Niccol will be instrumental in reviving the coffee giant, which has been facing challenges in its major markets, the U.S. and China, reported CNBC. Starbucks recently reported…