[9] Code Review Request For 8088846: PopupWindow does not disappear when associated Control is not visible.

[Chien Yang]

Hi Dave and Jonathan,

Please review the proposed fix.

JIRA: https://bugs.openjdk.java.net/browse/JDK-8088846
Webrev: http://cr.openjdk.java.net/~ckyang/JDK-8088846/webrev.00/

Thanks,
- Chien