[8u] Review request: RT-32090,Focus traversing on popups issue

[Martin Sladecek]

Jonathan, David,

please review the following.

Webrev: http://cr.openjdk.java.net/~msladecek/rt-32090/webrev.00/
JIRA: https://javafx-jira.kenai.com/browse/RT-32090

Thanks,
-Martin