[9] Code Review Request For 8091874: Need API in GridPane to get row count, column count, and cell bounds

[Chien Yang]

Hi Kevin,

Please review the suggested fix:

JIRA: https://bugs.openjdk.java.net/browse/JDK-8091874
Webrev: http://cr.openjdk.java.net/~ckyang/JDK-8091874/webrev.00/

Thanks,
- Chien