What's YouTube doing at the annual Game Developers Conference in San Francisco? Talking about integration with video games, obviously. More specifically, the company is hoping to expand an idea we first noticed in Call of Duty: Black Ops 2, whereby users could easily stream in-game content to YouTube. Clearly, the company worked in concert with Activision to make that possible, but forthcoming APIs will enable game developers far and wide to add the same functionality to other titles. Unfortunately, details remain murky regarding availability, but we are told that these new tools won't be limited to just consoles -- it sounds as if PC and mobile games will too be able to take advantage.