Bug 164984 [JFace] DefaultToolTip shouldn't be abstract
since all values can be accessed using getter/setter there's no need any more to declare it abstract.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/DefaultToolTip.java
private String text;
	private Color backgroundColor;
	private Font font;
	private Image backgroundImage;
	private Color foregroundColor;
	private Image image;