[webrtc-pc] Simulcast: Which layer gets dropped first? (#2080)

alvestrand has just created a new issue for https://github.com/w3c/webrtc-pc:

== Simulcast: Which layer gets dropped first? ==
This is a spin-off from #1896 - we need a section that describes "things that happen during a call", and it should say which order we drop layers in.

@amithilbuch says that the description of a=simulcast says "highest priority layer goes first", so the order of drops and the order of declarations should be the same.


Please view or discuss this issue at https://github.com/w3c/webrtc-pc/issues/2080 using your GitHub account