make onFulfilled, onRejected nullable. ------------- Created by MOE: http://code.google.com/p/moe-java MOE_MIGRATED_REVID=61839945
make onFulfilled, onRejected nullable.
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=61839945

jhiswin/idiil-closure-library,jhiswin/idiil-closure-library,jhiswin/idiil-closure-library,jhiswin/idiil-closure-library