There are many applications of this stuff outside of Android though. I agree that it's a little weird for it not to be incorporated in AOSP, but it could be use

There are many applications of this stuff outside of Android though. I agree that it's a little weird for it not to be incorporated in AOSP, but it could be used on Chrome OS. Heck, maybe even iOS? I think Google is just trying to keep the door open for developers on different platforms.