Wow! When they removed the "http:// from Chrome, I knew exactly why they were doing it: to hide the SDPY rollout while simultaneously not breaking copy paste interop with non-Chrome uses. However, I had no idea they had already done it! Amazingly clever and effective. I totally saw it coming and then totally missed it's arrival. Awesome.
The decision to drop "http:// from the display was a UI decision and had nothing to do with the internals. The idea is that the "http:// is just user-confusion. Most users can't spell HTTP, much less know why it is there. Why do we subject our poor users to it? Personally, I don't care.
Chrome does not recognize "spdy://" as a protocol scheme, and the UI display changes nothing with respect to how chrome selects protocols.