By Alexei Oreskovic SAN FRANCISCO (Reuters) – Google Inc’s reshuffle of its senior ranks underscores the Internet company’s evolving business ambitions, analysts say. Three years after co-founder Larry Page took the reins back as chief executive officer, his team of lieutenants is clearly undergoing a refresh. On Thursday, Google announced the surprise departure of its veteran business chief Nikesh Arora, who will become Vice Chairman of SoftBank Corp.