Re: [remote-playback] Make NotFoundError when prompt() is called and availability monitoring is not available optional

I believe this step is to handle when the user agent has disabled 
device discovery in a way that won't change over the lifetime of the 
call to `prompt()`, so the user agent would have no reason to show a 
dialog anyway.  I don't think we handle this specifically on Chrome 
for desktop and always show the dialog.

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Received on Tuesday, 8 November 2016 18:25:36 UTC