Bug 313407 EPartService needs to use EModelService's bringToTop method
The EMS variant considers shared parts, the EPS should delegate accordingly.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/PartServiceImpl.java
Object selected = event.getProperty(UIEvents.EventTags.NEW_VALUE);
				if (selected instanceof MPlaceholder) {
					selected = ((MPlaceholder) selected).getRef();
				}
				MPart oldSelectedPart = oldSelected instanceof MPart ? (MPart) oldSelected : null;
				MPart selectedPart = selected instanceof MPart ? (MPart) selected : null;
				if (oldSelectedPart != null && isInContainer(oldSelectedPart)) {
					firePartHidden(oldSelectedPart);
				}
				if (selectedPart != null && selectedPart.isToBeRendered()
						&& isInContainer(selectedPart)) {
					firePartVisible(selectedPart);
					firePartBroughtToTop(selectedPart);
				}
			}
		}
	};
	@Inject
	private MApplication application;
	/**
	 * This is the specific implementation. TODO: generalize it
	 */
	@Inject
	@Named(EPartService.PART_SERVICE_ROOT)
	private MElementContainer<MUIElement> rootContainer;
	@Inject
	private IPresentationEngine engine;
	@Inject
	private EModelService modelService;
	@Inject