Hi,

If I have a pointer to nsGlobalWIndow, how can I find out if a pointer
to nsGlobalWindow is the outermost window? There should only be 1
outermost window per each page load ? How can I tell which one
nsGlobalWindow is the outermost?

I try chekcing 'IsOuterWindow()" in the setNewDocument of
nsGlobalWindow, but I find there are multiple nsGlobalWindow returns
true for 'IsOuterWindow()'

Thank you.
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