[webkit] [9] Review request for 8149045: Debug build is not working after new WebKit upgrade

[Arunprasad Rajkumar]

Hello Kevin, Guru, Murali,

Please review the simple fix to make debug build usable after new WebKit 
upgrade.

JIRA: https://bugs.openjdk.java.net/browse/JDK-8149045

Webrev: http://cr.openjdk.java.net/~arajkumar/8149045/webrev.00

Issue:
1. JS Promise(similar to java Futures) is enabled by default, but new 
merge disables in few places which causes crash.
2. Assigning from Raw Pointer to RefPtr should use adoptRef instead of 
direct assignment.

Regards,
Arun