Bug 114962 [Decorators] Remove DecoratorUpdateListener class from IDE plug-in
DecoratorUpdateListener class should be removed as it is just experimental in 3.2 (see org.eclipse.ui.ide plugin)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
private IDEWorkbenchActivityHelper activityHelper = null;
    
    /**
     * Helper for managing work that is performed when the system is
     * otherwise idle.
     */
    private IDEIdleHelper idleHelper;
	/**
     * Creates a new workbench advisor instance.
     */
    public IDEWorkbenchAdvisor() {
        super();
        if (workbenchAdvisor != null) {
            throw new IllegalStateException();
        }
        workbenchAdvisor = this;
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.application.WorkbenchAdvisor#initialize
     */
    public void initialize(IWorkbenchConfigurer configurer) {
        
        configurer.setSaveAndRestore(true);
        
        exceptionHandler = new IDEExceptionHandler(configurer);
        
        WorkbenchAdapterBuilder.registerAdapters();
        
        String[] cmdLineArgs = Platform.getCommandLineArgs();