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/packageview/PackageExplorerPart.java
private void makeActions() {
		ISelectionProvider provider= getSelectionProvider();
		fOpenCUAction= new OpenResourceAction(provider);
		fPropertyDialogAction= new PropertyDialogAction(getShell(), provider);
		
		fShowNavigatorAction= new ShowInNavigatorAction(provider);
		fAddBookmarkAction= new AddBookmarkAction(getShell());
		
		fStandardGroups= new ContextMenuGroup[] {
			new BuildGroup(),
			new ReorgGroup(),
			new GenerateGroup(),
			new JavaSearchGroup()
		};
		
		fDeleteAction= ReorgGroup.createDeleteAction(provider);
		fRefreshAction= new RefreshAction(getShell());
		fFilterAction = new FilterSelectionAction(getShell(), this, PackagesMessages.getString("PackageExplorer.filters")); 
		fShowLibrariesAction = new ShowLibrariesAction(this, PackagesMessages.getString("PackageExplorer.referencedLibs")); 
		fShowBinariesAction = new ShowBinariesAction(getShell(), this, PackagesMessages.getString("PackageExplorer.binaryProjects")); 
		fFilterWorkingSetAction = new FilterWorkingSetAction(getShell(), this, "Filter Working Set..."); 
		fRemoveWorkingSetAction = new RemoveWorkingSetFilterAction(getShell(), this, "Remove Working Set Filter"); 
		
		fBackAction= new BackAction(fFrameList);
		fForwardAction= new ForwardAction(fFrameList);
		fZoomInAction= new GoIntoAction(fFrameList);
		fUpAction= new UpAction(fFrameList);
		fGotoTypeAction= new GotoTypeAction(this);
		fGotoPackageAction= new GotoPackageAction(this);
		IActionBars actionService= getViewSite().getActionBars();