Apple chose early Tuesday to reveal that it had persuaded the CEO of UK retailer Dixons, John Browett, to become its Senior VP for retail. The shift will fill the vacuum left since June, when Ron Johnson left to become the CEO of JC Penney. Apple CEO Tim Cook described the decision to hire the overseer of chains such as Currys and PC World as a reaction to having met Browett and his reputed focus on the customer.