Bug 172804 [EditorMgmt] Convert new tab behaviour into a tweaklet
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
popUpMenu.add(new ActionContributionItem(lockToolBarAction));
            popUpMenu.add(new ActionContributionItem(editActionSetAction));
            popUpMenu.add(new ActionContributionItem(toggleCoolbarAction));
            coolBar.setContextMenuManager(popUpMenu);
        }
        coolBar.add(new GroupMarker(IIDEActionConstants.GROUP_FILE));
        { 
            IToolBarManager fileToolBar = actionBarConfigurer.createToolBarManager();
            fileToolBar.add(new Separator(IWorkbenchActionConstants.NEW_GROUP));
            fileToolBar.add(newWizardDropDownAction);
            fileToolBar.add(new GroupMarker(IWorkbenchActionConstants.NEW_EXT));
            fileToolBar.add(new GroupMarker(
                    IWorkbenchActionConstants.SAVE_GROUP));
            fileToolBar.add(saveAction);
            fileToolBar
                    .add(new GroupMarker(IWorkbenchActionConstants.SAVE_EXT));
            fileToolBar.add(printAction);
            fileToolBar
                    .add(new GroupMarker(IWorkbenchActionConstants.PRINT_EXT));
            fileToolBar
                    .add(new Separator(IWorkbenchActionConstants.BUILD_GROUP));
            fileToolBar
                    .add(new GroupMarker(IWorkbenchActionConstants.BUILD_EXT));
            fileToolBar.add(new Separator(
                    IWorkbenchActionConstants.MB_ADDITIONS));
            
            coolBar.add(actionBarConfigurer.createToolBarContributionItem(fileToolBar,
                    IWorkbenchActionConstants.TOOLBAR_FILE));
        }
        coolBar.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));