Re: [webrtc-pc] Is an RTCIceServer with no urls useful?

@steveanton Given that `urls` is a required field that can be either a string or an array, we have
```js
{ iceServers: [ { urls: "" } ] } // SyntaxError
{ iceServers: [ { urls: [] } ] } // success
```

Perhaps we should throw `SyntaxError` for both?

As it stands now, our [parsing steps](http://w3c.github.io/webrtc-pc/#set-pc-configuration) appear to do the wrong thing with the latter:

   *11. Append server to validatedServers.*

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Received on Thursday, 30 August 2018 13:51:17 UTC