Chrome turned 21 last week, and in that new version, Google's made playing Flash videos in its browser even safer... for Windows users, anyway. This latest release puts Adobe's Flash Player plug-in for Windows in a sandbox, much as Chrome 20 did for Linux. This sandbox is "as strong" as Chrome's extremely robust native version -- even in Windows XP -- which means that Flash-borne malware can't hurt Microsofties. Securing the Flash Player plug-in is the result of two years of work, and was made possible by a new plug-in architecture Google co-developed with Adobe. In addition to the security benefits, the architecture has also brought performance improvements by way of a 20 percent decrease in Flash crashes and GPU acceleration for smoother scrolling and faster Flash rendering. And, while the immediate good news is for Windows users, Google has assured us that a port for OS X is in the works, and it hopes to ship that Mac version soon.