Forget the klutzy announcement-by-comic-book of Google Chrome, Google's new Web browser — this thing was the worst-kept secret in the Valley and beyond. Joshua Schachter notes that Alberto Lumbreras, an R&D engineer at Telefonica, Twittered about Google Chrome in July — but no one noticed because he called it a "navegador" instead of a "browser." The news made it to China late last month. And the head of PR for Google's Android project spilled the beans over tapas last Friday. That, too, made it to Twitter.