[mediacapture-main] result of enumerateDevices when there is no origin

guidou has just created a new issue for 
https://github.com/w3c/mediacapture-main:

== result of enumerateDevices when there is no origin ==
Sections 9.2 and 9.3 establish a security model based on a page's 
origin.
Device IDs are unique per origin and so on.
However, behavior is not defined for the case when there is no origin.
 For example, what should happen if a user calls enumerateDevices from
 a JavaScript console and the page is "about:blank", or something 
equivalent, without any defined origin?

Please view or discuss this issue at 
https://github.com/w3c/mediacapture-main/issues/417 using your GitHub 
account