Bug 126527 [Field Assist] - API - Field Decoration alignment issues are different for cell editors
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/DecoratedField.java
private static final String EMPTY = ""; 
		/**
		 * Offset of info hover arrow from the left or right side.
		 */
		private int hao = 10;
		/**
		 * Width of info hover arrow.
		 */
		private int haw = 8;
		/**
		 * Height of info hover arrow.
		 */
		private int hah = 10;
		/**
		 * Margin around info hover text.
		 */