Bug 175314 Delete commented code in WorkbenchActionBuilder
WorkbenchActionBuilder has about 225 lines of code commented out in createHelpMenu. From the looks of it, this was added as test code when the command handler work was first being done. It was introduced in revision 1.16 by cmclaren. I'm going to delete it.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
public boolean isEnabled() {
         return false;
         }
         };
         
         IHandler handlerB = new IHandler() {
         public void execute() {
         }
         
         public void execute(Event event) {
         }
         
         public boolean isEnabled() {
         return false;
         }
         };		
         
         final IMutableCommandHandlerService commandHandlerServiceA = CommandHandlerServiceFactory.getMutableCommandHandlerService();
         commandHandlerServiceA.setHandlersByCommandId(new HashMap(Collections.singletonMap("command", handlerA)));
         final IMutableCommandHandlerService commandHandlerServiceB = CommandHandlerServiceFactory.getMutableCommandHandlerService();
         commandHandlerServiceB.setHandlersByCommandId(new HashMap(Collections.singletonMap("command", handlerB)));				
         
         menu.add(new Separator());
         
         menu.add(new Action("Add handler A to the workbench") {
         public void run() {
         IWorkbench workbench = PlatformUI.getWorkbench();
         IWorkbenchCommandSupport workbenchCommandSupport = (IWorkbenchCommandSupport) workbench.getCommandSupport();
         workbenchCommandSupport.getCompoundCommandHandlerService().addCommandHandlerService(commandHandlerServiceA);