[8u40] approval request for 8055830: JDK-8015969.js is silently failing

[A. Sundararajan]

Please approve.

Bug: https://bugs.openjdk.java.net/browse/JDK-8055830
jdk9 review thread: 
http://mail.openjdk.java.net/pipermail/nashorn-dev/2014-August/003304.html
jdk8u40 webrev: http://cr.openjdk.java.net/~sundar/8055830/8u40/

Thanks
-Sundar