Bug 218360 [Servicability] Fix places that pop up message dialogues under ISafeRunnable
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
*            the <code>Font</code> to use.
	 * @since 3.0
	 */
	protected void updateTreeFont(Font dialogFont) {
		getTreeViewer().getControl().setFont(dialogFont);
	}
	/**
	 * Returns the currentPage.
	 * @return IPreferencePage
	 * @since 3.1
	 */
	protected IPreferencePage getCurrentPage() {
		return currentPage;
	}
	/**
	 * Sets the current page.
	 * @param currentPage
	 * 
	 * @since 3.1
	 */
	protected void setCurrentPage(IPreferencePage currentPage) {
		this.currentPage = currentPage;
	}
	/**
	 * Set the treeViewer.
	 * @param treeViewer
	 * 
	 * @since 3.1
	 */
	protected void setTreeViewer(TreeViewer treeViewer) {