Bug 120727 Info text area does not appear in PopupDialog
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/PopupDialog.java
* The symbolic font name for the popup info font (value
	 * <code>"org.eclipse.jface.dialogs.popupinfofont"</code>).
	 */
	private final static String POPUP_INFOFONT = "org.eclipse.jface.dialogs.popuptitlefont"; 
	/**
	 * Border thickness in pixels.
	 */
	private static final int BORDER_THICKNESS = 1;
	/**
	 * Get the info font for popups, using the specified font as a base.
	 * 
	 * @param font
	 *            the font on which to base the info font.
	 * 
	 * @return the info font
	 */
	protected static Font getInfoFont(Font font) {
		if (!JFaceResources.getFontRegistry().hasValueFor(POPUP_INFOFONT)) {
			FontData[] fontDatas = font.getFontData();
			for (int i = 0; i < fontDatas.length; i++)
				fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10);
			Font infoFont = new Font(font.getDevice(), fontDatas);
			JFaceResources.getFontRegistry().put(POPUP_INFOFONT,
					infoFont.getFontData());
			infoFont.dispose();
		}
		return JFaceResources.getFontRegistry().get(POPUP_INFOFONT);
	}
	/**
	 * Get the title font for popups.