[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 #33 from Boris Zbarsky <bzbarsky@mit.edu> ---
Are there web platform tests for the change?  Bug reports on UAs?

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Received on Monday, 10 April 2017 14:45:08 UTC