Bug 68552 CallHierarchyViewPart uses deprecated setTitle API [call hierarchy]
The string currently being passed into setTitle should be passed to setContentDescription instead.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java
public void dispose() {
        if (fActionGroups != null)
            fActionGroups.dispose();
		
		if (fClipboard != null)
	        fClipboard.dispose();
        super.dispose();
    }
    /**
     * Goes to the selected entry, without updating the order of history entries.
     */
    public void gotoHistoryEntry(IMethod entry) {
        if (fMethodHistory.contains(entry)) {
            setMethod(entry);
        }
    }
    /* (non-Javadoc)
     * Method declared on IViewPart.
     */
    public void init(IViewSite site, IMemento memento)
        throws PartInitException {
        super.init(site, memento);
        fMemento = memento;
    }
    /**
     *
     */
    public void refresh() {
        setCalleeRoot(null);
        setCallerRoot(null);