Review request for JDK-8135190: Method code too large in Babel browser.js script

[Hannes Wallnoefer]

Please review JDK-8135190: Method code too large in Babel browser.js script:
http://cr.openjdk.java.net/~hannesw/8135190/

This makes object literals splittable. I tried to share as much code as 
possible with array literal splitting so I had to introduce a couple of 
new interfaces.

Hannes