[dom] Using [Exposed=Window]

ArkadiuszMichalski has just created a new issue for =

https://github.com/whatwg/dom:

=3D=3D Using [Exposed=3DWindow] =3D=3D
According to Web IDL default global is primary global interface =

(Window), so there is no need to use [Exposed] only for Window:
http://heycam.github.io/webidl/#Exposed
but even if it is going to use them, then I see that for some =

interface is still missing:
DOMTokenList, DOMSettableTokenList, MutationObserver, EventListener. =

I'm not sure what should be done for MutationCallback (callback =

function http://heycam.github.io/webidl/#idl-callback-functions), =

[Exposed] can/should be use here or not?

I check some other specs and most of them don't use [Exposed] only for
 Window (even in HTML, but see one exception =

HTMLHyperlinkElementUtils).

See https://github.com/whatwg/dom/issues/89