Bug 110998 [Problems] Remove the working set selection and switch to using global working sets
M2 We need to remove the working sets option in the filter and switch to using the current list of working sets. We should move this to a preference that says only "Use Working Sets"
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerFilter.java
* </ul>
	 */
	public boolean isEnabled() {
		return enabled;
	}
	/**
	 * <b>Warning:</b> for internal package use only. Return the root marker
	 * types.
	 * 
	 * @return the root marker types.
	 */
	public List getRootTypes() {
		return rootTypes;
	}
	/**
	 * <b>Warning:</b> for internal package use only. Return the selected
	 * types.
	 * 
	 * @return the selected marker types to be displayed.
	 */
	public List getSelectedTypes() {
		return selectedTypes;
	}
	/**
	 * Find the typeModel entry that matches id.
	 * 
	 * @param id
	 *            the ID for a marker type
	 * @return  MarkerType or <code>null</code> if it is not
	 *  found.