Bug 163345 [Field Assist] - API - Deprecate DecoratedField and related classes
If ControlDecoration is adopted in replacement of DecoratedField by all existing SDK clients, then we should deprecate DecoratedField.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/FieldDecoration.java
/*
	 * The image to be shown in the decoration.
	 */
	private Image image;
	/*
	 * The description to show in the decoration's hover.
	 */
	private String description;
	/**
	 * Create a decoration for a field with the specified image and description
	 * text.
	 * 
	 * @param image
	 *            the image shown in the decoration. A <code>null</code> image
	 *            will result in a blank decoration, which may be used to
	 *            reserve space near the field.