Re: [webrtc-pc] Specify when a data channel's ID is assigned, and what the `id` attribute returns when no ID is assigned.

I'd think leaving it as null (which means it has to be nullable) would
 be the clearest way to do it.
Any "marker" value risks being a possibly-useful value if we change 
the underlying protocol, but null won't be.

Reopening issue.

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Received on Thursday, 26 January 2017 22:28:28 UTC