Ever since Adobe announced its decision to abandon the development of Flash for mobile devices, there has been a lot of speculation about the ubiquitous plugin’s future. While it’s difficult to tell exactly how much more time Flash has left to go, that it will be usurped by HTML5 is almost certain. In the meantime, browser vendors can hone their browsers’ HTML5 skills. This is what Mozilla has been doing for some time now. Now it’s readying yet another feature that will benefit Firefox’s overall HTML5 capabilities.