Bug 36511 call hierarchy: details list should be a table with icons
details list should be a table with icons - we can reuse the icons used by 'find in file'
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java
private HistoryDropDownAction fHistoryDropDownAction;
    private RefreshAction fRefreshAction;
    private OpenDeclarationAction fOpenDeclarationAction;
    private OpenLocationAction fOpenLocationAction;
    private FocusOnSelectionAction fFocusOnSelectionAction;
    private CompositeActionGroup fActionGroups;
    private CallHierarchyViewer fCallHierarchyViewer;
    private boolean fShowCallDetails;
    public CallHierarchyViewPart() {
        super();
        fDialogSettings = JavaPlugin.getDefault().getDialogSettings();
        fMethodHistory = new ArrayList();
    }
    public void setFocus() {
        fPagebook.setFocus();
    }
    /**
     * Sets the history entries
     */
    public void setHistoryEntries(IMethod[] elems) {
        fMethodHistory.clear();
        for (int i = 0; i < elems.length; i++) {
            fMethodHistory.add(elems[i]);
        }
        updateHistoryEntries();
    }
    /**
     * Gets all history entries.
     */
    public IMethod[] getHistoryEntries() {