For the Identity work for b2g, we need a way to access the message manager from a window object. Smaug said we could do this by adding a getter to docShell.
Created attachment 627229 [details] [diff] [review]
The idea is that one could get nsIContentFrameMessageManager interface from
Created attachment 627303 [details] [diff] [review]
Felipe, feel free to try this.