Bug 166600 [DataBinding] Refactor tests to be in the correct packages
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/util/EventTrackers.java
public static class ChangeEventTracker implements IChangeListener {
		public int count;
		public ChangeEvent event;
		public void handleChange(ChangeEvent event) {
			count++;
			this.event = event;
		}
	}
	public static class ValueChangeEventTracker implements IValueChangeListener {
		public int count;
		public ValueChangeEvent event;
		public void handleValueChange(ValueChangeEvent event) {
			count++;
			this.event = event;
		}
	}
}