[Bug 27384] CSSStyleSheet.insertRule's index argument should be optional with default 0

https://www.w3.org/Bugs/Public/show_bug.cgi?id=27384

--- Comment #15 from Boris Zbarsky <bzbarsky@mit.edu> ---
Again, that requires treating "missing" and "undefined" differently, yes?

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Received on Wednesday, 26 November 2014 15:18:52 UTC