By Sheila Dang April 12 (Reuters) - Snap Inc SNAP.N, owner of photo messaging app Snapchat, said on Wednesday it has hired a former Google executive to help the tech company improve the performance of its digital ads. Snap is rebuilding its ad sales team after two key leaders left for Netflix Inc last year. The Santa Monica, California-based company also aims to improve how Snapchat ads can lead to product sales at a time when some advertisers are cutting their marketing budget amid high inflation and concerns about the economy.