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/MarkerView.java
* <code>updateStatusMessage(IStructuredSelection)</code> with the current
	 * selection or <code>null</code>. Classes wishing to override this
	 * functionality, should just override the method
	 * <code>updateStatusMessage(IStructuredSelection)</code>.
	 * </p>
	 */
	protected void updateStatusMessage() {
		ISelection selection = getViewer().getSelection();
		if (selection instanceof IStructuredSelection)
			updateStatusMessage((IStructuredSelection) selection);
		else
			updateStatusMessage(null);
	}
	/**
	 * Updates that message displayed in the status line. If the selection
	 * parameter is <code>null</code> or its size is 0, the status area is
	 * blanked out. If only 1 marker is selected, the status area is updated
	 * with the contents of the message attribute of this marker. In other cases
	 * (more than one marker is selected) the status area indicates how many
	 * items have been selected.
	 * <p>
	 * This method may be overwritten.
	 * </p>
	 * <p>
	 * This method is called whenever a selection changes in this view.
	 * </p>
	 * 
	 * @param selection
	 *            a valid selection or <code>null</code>
	 */