[whatwg] Cryptographically strong random numbers

[Boris Zbarsky]

> Most operating systems provide strong sources of randomness that can
> be used to seed cryptographic PRNGs.  I'd be inclined to recommend
> that folks use that sort of "truly random" seed.

That sounds good to me.

> Given this feedback, we'll probably start off with the Uint8Array version.

Sounds like a plan.  I'll see about getting this to happen in Gecko too.

-Boris