The normal messagemanager have a tree
We don't want mozbrowser mm to show up there.
mozbrowser mm just shouldn't have a parent
Created attachment 622966 [details] [diff] [review]
I changed also the OwnerDoc() to GetOwnerDoc() to follow the coding style
(Get* may return null).
Comment on attachment 622966 [details] [diff] [review]
Ah, I think I understand now. r=me. :)