For the XBL-embedding-DnD stuff, the bindings for the drags need to be able to tell if they are hanging off chrome (so they can ignore the event) or content (so they can handle it). Blocking dnd for embedding.
Alec discussed ways of doing this in bug 60984. I don't think there's an easy, generic way to distinguish between content and chrome.
moz0.8/p4 (don't know if D&D is needed for embedding)
doesn't really block me anymore. i think we're abandoning this route for dragDrop. --> future
--> default owner
I'm gonna take a wild guess that this bug is a dead end. Right?