[whatwg] Changing the type of event.dataTransfer.types

[Cameron McCormack]

Daniel Cheng:
> We've reverted it back to an Array in WebKit.
> Should the "live" requirement remain if it's an Array rather than a
> DOMStringList?

I would think so.  Note that if the spec is changed to

   readonly attribute DOMString[] types;

it means that the object returned from that property is a platform array 
object, not a JS Array object.