Announced at Google I/O last year and available to Chrome beta users since February, hands-free voice search is now being rolled out to all Chromies. The latest version of Chrome comes with the option to just say OK Google when opening a new tab or the Google homepage and to speak your query directly. Depending on the information being sought, Google might also respond by voice when returning the results. Though its described as a universal update, the feature seems to only work for Chrome users with their language set to US English so far. …