IDL for NFCRecordData

[riju]

From [1], it looks like NFCRecordData is changing from "any" to
typedef (DOMString or unrestricted double or object or ArrayBuffer) NFCRecordData;

I had a quick look at the web-idl spec, http://heycam.github.io/webidl/#idl-union
and it looks like the above IDL is valid. But for Blink's IDL, at least as of now, Object is not supported as an union member.
I can raise the issue at https://code.google.com/p/chromium/issues/detail?id=240176

[1] https://github.com/w3c/web-nfc/pull/50/files#diff-eacf331f0ffc35d4b482f1d15a887d3bR1032

[zolkis]

Should we switch back to any? Or could you use any just in Blink instead of the explicit union (knowing this is an issue due to Blink implementation?). I'd suggest the latter.

[riju]

We can do the latter, and when the Blink IDL issue is solved, switch back to NFCRecordData.

[anssiko]

Given this appears to be an implementation related issue, I'll close this.