Review request for JMC-6151:[osx] opening .jfr file on mac fails for first time

[Tejpal Rebari]

Hi all,

Please review the fix for,
Jira: https://bugs.openjdk.java.net/browse/JMC-6151 <https://bugs.openjdk.java.net/browse/JMC-5576>
webrev: http://cr.openjdk.java.net/~ghb/trebari/JMC-6151/webrev.0/ <http://cr.openjdk.java.net/~ghb/trebari/JMC-6151/webrev.0/>
RC : (Mac OSX) FileDialog.setfilterIndex() doesn't work as expected
Solution: For Mac OSX disabled the filters extension ,so the file dialog shows all the files that are there in the path.While for other OS it works same as before.
Test: Tested on Windows 10, MacOS, Linux.

Thanks,
Tejpal