Re: [PATCH v3 0/1] MR3391: mshtml: implement window.MutationObserver with MutationObserver stub

[Gabriel Ivăncescu (＠insn)]

Gabriel Ivăncescu (@insn) commented about dlls/mshtml/mshtml_private.h:
>  XIID(IWinePageTransitionEvent) \
>  XIID(IWineXMLHttpRequestPrivate) \
>  XIID(IWineMSHTMLConsole) \
> - XIID(IWineMSHTMLMediaQueryList)
> - XIID(IWineMSHTMLMediaQueryList) \
> - XIID(IWineMSHTMLMutationObserver)

I don't think this is needed here? Since you only add the constructor? This (empty) interface is for the _instance_ created from the constructor. So you don't need `IWineMSHTMLMutationObserver`.