Initial cut at scaffolding for mac sidetabs. No visible changes to browser wi...

chrome/browser/tab_menu_model.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved. Use of this
 // source code is governed by a BSD-style license that can be found in the
 // LICENSE file.
 
 #include "chrome/browser/tab_menu_model.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "grit/generated_resources.h"
 
 TabMenuModel::TabMenuModel(menus::SimpleMenuModel::Delegate* delegate,
                            bool is_pinned)
     : menus::SimpleMenuModel(delegate) {
   Build(is_pinned);
 }
 
 // static
 bool TabMenuModel::AreVerticalTabsEnabled() {
 #if defined(OS_CHROMEOS)
   return true;
-#elif defined(TOOLKIT_VIEWS)
+#elif defined(TOOLKIT_VIEWS) || defined(OS_MACOSX)
   return CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableVerticalTabs);
-#else
-  return false;
 #endif
 }
 
 void TabMenuModel::Build(bool is_pinned) {
   AddItemWithStringId(TabStripModel::CommandNewTab, IDS_TAB_CXMENU_NEWTAB);
   AddSeparator();
   AddItemWithStringId(TabStripModel::CommandReload, IDS_TAB_CXMENU_RELOAD);
   AddItemWithStringId(TabStripModel::CommandDuplicate,
                       IDS_TAB_CXMENU_DUPLICATE);
   AddItemWithStringId(
@@ skipping 11 matching lines @@
   AddSeparator();
   AddItemWithStringId(TabStripModel::CommandRestoreTab, IDS_RESTORE_TAB);
   AddItemWithStringId(TabStripModel::CommandBookmarkAllTabs,
                       IDS_TAB_CXMENU_BOOKMARK_ALL_TABS);
   if (AreVerticalTabsEnabled()) {
     AddSeparator();
     AddCheckItemWithStringId(TabStripModel::CommandUseVerticalTabs,
                              IDS_TAB_CXMENU_USE_VERTICAL_TABS);
   }
 }