Rough draft of EME Concerns document.

As discussed in various forums, this is a version of the opinion document that tries to catalog our concerns for EME as a web-facing API, without suggesting solutions or focusing on specific technical choices or problems with the current mechanism. Feedback definitely welcome.

That's very dangerous thing. I certainly dislike the idea that some origins have more rights than others. It definitely contradicts the requirement to provide similar opportunities to small content providers.