(In reply to Anne from comment #0)
> Otherwise it is unclear what their values are.

We believe this bug refers to the text in Section 3.1:
https://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html#event-definitions

/paulc

It does, yes. MediaKeyNeededEventInit and MediaKeyMessageEventInit in particular.

What is the notation in WebIDL for an empty ArrayBuffer ? 

ArrayBuffer message = ArrayBuffer();

or

ArrayBuffer message = new ArrayBuffer();

or

?

https://dvcs.w3.org/hg/html-media/rev/a0f72cc27b6d

Would it be better to have an empty ArrayBuffer?

We can certainly fix IDL.

Syntax wise, we could probably reuse "= []" to represent empty arraythings of all sorts.

(In reply to Mark Watson from comment #4)
> https://dvcs.w3.org/hg/html-media/rev/a0f72cc27b6d

Was the change to MediaKeyMessageEvent's destinationURL attribute intentional? This is the only one of the four attributes in non-Init structures to get a default value.

(In reply to David Dorwin from comment #7)
> (In reply to Mark Watson from comment #4)
> > https://dvcs.w3.org/hg/html-media/rev/a0f72cc27b6d
> 
> Was the change to MediaKeyMessageEvent's destinationURL attribute
> intentional? This is the only one of the four attributes in non-Init
> structures to get a default value.

Oops - you are right - I will fix this.

(In reply to Mark Watson from comment #8)
> (In reply to David Dorwin from comment #7)
> > (In reply to Mark Watson from comment #4)
> > > https://dvcs.w3.org/hg/html-media/rev/a0f72cc27b6d
> > 
> > Was the change to MediaKeyMessageEvent's destinationURL attribute
> > intentional? This is the only one of the four attributes in non-Init
> > structures to get a default value.
> 
> Oops - you are right - I will fix this.

I reverted the change to this line in https://dvcs.w3.org/hg/html-media/rev/a38c961e1ab0.