[11] Review request: 8196677: Cherry pick GTK WebKit 2.18.6 changes

[Arunprasad Rajkumar]

Hi,

Please review the following fix,

Bug: https://bugs.openjdk.java.net/browse/JDK-8196677

Patch: http://cr.openjdk.java.net/~arajkumar/8196677/webrev

Thanks,
Arun