Bug 54802 Delete IStatusLineWithProgressManager
M7 IStatusLineWithProgressManager is now obsolete and should be deleted by M8
bundles/org.eclipse.jface/src/org/eclipse/jface/action/StatusLineManager.java
}
/**
 * Creates and returns this manager's status line control. 
 * Does not create a new control if one already exists.
 *
 * @param parent the parent control
 * @param style the style for the control
 * @return the status line control
 * @since 3.0
 */
public Control createControl(Composite parent, int style) {
	if (!statusLineExist() && parent != null) {
		statusLine= new StatusLine(parent, style);
		add(new GroupMarker(BEGIN_GROUP));
		add(new GroupMarker (MIDDLE_GROUP));
		add(new GroupMarker(END_GROUP));
		update(false);
	}
	return statusLine;
}
/**
 * Disposes of this status line manager and frees all allocated SWT resources.
 * Notifies all contribution items of the dispose. Note that this method does
 * not clean up references between this status line manager and its associated
 * contribution items. Use <code>removeAll</code> for that purpose.
 */
public void dispose() {
	if (statusLineExist())
		statusLine.dispose();
	statusLine = null;