Bug 201696 [Mac] window hard to resize
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
/**
     * Creates and returns the Navigate menu.
     */
    private MenuManager createNavigateMenu() {
        MenuManager menu = new MenuManager(
                IDEWorkbenchMessages.Workbench_navigate, IWorkbenchActionConstants.M_NAVIGATE);
        menu.add(new GroupMarker(IWorkbenchActionConstants.NAV_START));
        menu.add(goIntoAction);
        MenuManager goToSubMenu = new MenuManager(IDEWorkbenchMessages.Workbench_goTo, IWorkbenchActionConstants.GO_TO);
        menu.add(goToSubMenu);
        goToSubMenu.add(backAction);
        goToSubMenu.add(forwardAction);
        goToSubMenu.add(upAction);
        goToSubMenu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
        menu.add(new Separator(IWorkbenchActionConstants.OPEN_EXT));
        for (int i = 2; i < 5; ++i) {
            menu.add(new Separator(IWorkbenchActionConstants.OPEN_EXT + i));
        }
        menu.add(new Separator(IWorkbenchActionConstants.SHOW_EXT));
        {
			MenuManager showInSubMenu = new MenuManager(
					IDEWorkbenchMessages.Workbench_showIn, "showIn"); 
			showInSubMenu.setActionDefinitionId(showInQuickMenu
					.getActionDefinitionId());
			showInSubMenu.add(ContributionItemFactory.VIEWS_SHOW_IN
					.create(getWindow()));
			menu.add(showInSubMenu);
		}
        for (int i = 2; i < 5; ++i) {
            menu.add(new Separator(IWorkbenchActionConstants.SHOW_EXT + i));