Bug Info:
=========
Dialog shows control buttons even unchecked the control buttons option in file chooser demo with GTK L&F.

JDK Info:
=========
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b54)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b54, mixed mode, sharing)

Steps to Reproduce:
===================

1. Install JDK bundle.

2. Use the following command and launch the application
${JAVA_HOME}/bin/java -jar ${JAVA_HOME}/demo/jfc/FileChooserDemo/*.jar

3. Select GTK LookAndFeel.

4. Select 'Embed in Wizard' and 'show preview' options.

5. Click 'Show FileChooser' button.

Expected Results:
=================
Dialog should show back,next and close buttons instead of OK and CANCEL buttons.

Actual Results:
===============
Dialog is showing OK and CANCEL buttons also.


Please check the attached gif file.