Bug 11748 switch to new DecoratorManager API
From the workbench change notes: API changes IWorkbenchPartSite.getDecoratorManager() - As the DecoratorManager has proven to be required for more than just IWorkbenchPartSites we have moved getDecoratorManager() to IWorkbench and deprecated the getDecoratorManager() in IWorkbenchPartSite. The one in IWorkbenchPartSite will be removed after the other Eclipse components have had a chance to switch to the new API.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaOutlinePage.java
*/
	public ISelection getSelection() {
		if (fOutlineViewer == null)
			return StructuredSelection.EMPTY;
		return fOutlineViewer.getSelection();
	}
	
	private void registerToolbarActions() {
		
		IToolBarManager toolBarManager= getSite().getActionBars().getToolBarManager();
		if (toolBarManager != null) {
			
			Action action= new LexicalSortingAction();
			toolBarManager.add(action);
			
			fMemberFilterActionGroup= new MemberFilterActionGroup(fOutlineViewer, "JavaOutlineViewer");
			fMemberFilterActionGroup.contributeToToolBar(toolBarManager);
		}
	}
	
	/*
	 * @see IPage#createControl
	 */
	public void createControl(Composite parent) {
		
		Tree tree= new Tree(parent, SWT.MULTI);
		StandardJavaUILabelProvider lprovider= new StandardJavaUILabelProvider(
			StandardJavaUILabelProvider.DEFAULT_TEXTFLAGS |  JavaElementLabels.F_APP_TYPE_SIGNATURE,
			StandardJavaUILabelProvider.DEFAULT_IMAGEFLAGS,
			StandardJavaUILabelProvider.getAdornmentProviders(true, new OverrideAdornmentProvider())