Bug 177176 [Field Assist] [API] - Add 7x7 information control decoration to FieldDecorationRegistry
Please see attached zip file containing icon recommended by media design team.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/FieldDecorationRegistry.java
this.imageId = imageId;
			this.imageRegistry = registry;
		}
		Entry(String description, Image image) {
			this.description = description;
			this.image = image;
		}
		FieldDecoration getDecoration() {
			if (decoration == null) {
				if (image == null) {
					if (imageRegistry == null) {
						imageRegistry = JFaceResources.getImageRegistry();
					}
					image = imageRegistry.get(imageId);
				}
				decoration = new FieldDecoration(image, description);
			}
			
			description = null;
			imageId = null;
			imageRegistry = null;
			image = null;
			return decoration;
		}
	}
	/**
	 * Default instance of the registry. Applications may install their own
	 * registry.
	 */
	private static FieldDecorationRegistry defaultInstance;