Bug 71283 Type Hierarchy View should show active working set in content description [type hierarchy]
Eclipse 3.0 The type hierarchy should show the active working set in the content description. Instead of WorkbenchPart#setTitle(), it should use setContentDescription() to display the focus type and active working set.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
public TypeHierarchyViewPart() {
		fSelectedType= null;
		fInputElement= null;
		fIsVisible= false;
		fIsRefreshRunnablePosted= false;
		fSelectInEditor= true;
		fRestoreStateJob= null;
		
		fHierarchyLifeCycle= new TypeHierarchyLifeCycle();
		fTypeHierarchyLifeCycleListener= new ITypeHierarchyLifeCycleListener() {
			public void typeHierarchyChanged(TypeHierarchyLifeCycle typeHierarchy, IType[] changedTypes) {
				doTypeHierarchyChanged(typeHierarchy, changedTypes);
			}
		};
		fHierarchyLifeCycle.addChangedListener(fTypeHierarchyLifeCycleListener);
		
		fPropertyChangeListener= new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				doPropertyChange(event);
			}
		};
		PreferenceConstants.getPreferenceStore().addPropertyChangeListener(fPropertyChangeListener);
		fIsEnableMemberFilter= false;
		
		fInputHistory= new ArrayList();
		fAllViewers= null;
				
		fViewActions= new ToggleViewAction[] {
			new ToggleViewAction(this, VIEW_ID_TYPE),