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/browsing/JavaBrowsingPart.java
private ILabelProvider fLabelProvider;
	private ILabelProvider fTitleProvider;
	private StructuredViewer fViewer;
	private IMemento fMemento;
	private JavaElementTypeComparator fTypeComparator;
	
	
	private ContextMenuGroup[] fStandardGroups;
	private Menu fContextMenu;		
	private OpenResourceAction fOpenCUAction;
	private Action fOpenToAction;
	private Action fShowNavigatorAction;
	private PropertyDialogAction fPropertyDialogAction;
 	private IRefactoringAction fDeleteAction;
 	private RefreshAction fRefreshAction;
 	private BackAction fBackAction;
	private ForwardAction fForwardAction;
	private GoIntoAction fZoomInAction;
	private UpAction fUpAction;
	private IWorkbenchPart fPreviousSelectionProvider;
	private Image fOriginalTitleImage;
		
	/*
	 * Ensure selection changed events being processed only if
	 * initiated by user interaction with this part.
	 */
	private boolean fProcessSelectionEvents= true;
	
	private IPartListener fPartListener= new IPartListener() {