https://wiki.mozilla.org/WebExtensions#Additional_APIs http://www.slashgear.com/project-spartan-is-now-edge-and-will-have-chrome-extensions-29381422/
It would be a pity if Mozilla and Microsoft implements support for Chrome's Native Messaging without any discussions on W3C lists. Although Native Messaging is better than nothing, it is in its current shape hardly more than a workaround: http://www.cnet.com/news/google-paves-over-hole-left-by-chrome-plug-in-ban/ Anders