Bug 60714 Call Hierarchy: display search scope in view title
Call Hierarchy should display the current search scope in the view title, like the Search View does. E.g.: Members calling 'updateView()' - in Workspace Calls from 'updateView()' - in Working Set: my projects
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/SearchScopeActionGroup.java
return null;   
		}
		Set workingSets= new HashSet(2);
		for (int j= 0; j < workingSetNames.length; j++) {
			IWorkingSet workingSet= getWorkingSetManager().getWorkingSet(workingSetNames[j]);
			if (workingSet != null) {
				workingSets.add(workingSet);
			}
		}
		
		return (IWorkingSet[])workingSets.toArray(new IWorkingSet[workingSets.size()]);
	}
	
	/**
	 * Sets the new search scope type.
	 *  
	 * @param newSelection New action which should be the checked one
	 * @param ignoreUnchecked Ignores actions which are unchecked (necessary since both the old and the new action fires).
	 */
	protected void setSelected(SearchScopeAction newSelection, boolean ignoreUnchecked) {
		if (!ignoreUnchecked || newSelection.isChecked()) {
			if (newSelection instanceof SearchScopeWorkingSetAction) {
				fSelectedWorkingSetNames = getWorkingSetNames(((SearchScopeWorkingSetAction) newSelection).getWorkingSets());
			} else {
				fSelectedWorkingSetNames = null;
			}
			
			if (newSelection != null) {
				fSelectedAction= newSelection;
			} else {