Add Wallpaper option to launcher context menu

chrome/browser/ui/ash/launcher/launcher_context_menu.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_
 
 #include "ash/launcher/launcher_alignment_menu.h"
 #include "ash/launcher/launcher_types.h"
 #include "base/basictypes.h"
@@ skipping 33 matching lines @@
     MENU_CLOSE,
     MENU_PIN,
     LAUNCH_TYPE_PINNED_TAB,
     LAUNCH_TYPE_REGULAR_TAB,
     LAUNCH_TYPE_FULLSCREEN,
     LAUNCH_TYPE_WINDOW,
     MENU_AUTO_HIDE,
     MENU_NEW_WINDOW,
     MENU_NEW_INCOGNITO_WINDOW,
     MENU_ALIGNMENT_MENU,
+    MENU_CHANGE_WALLPAPER,
   };
 
   // Does |item_| represent a valid item? See description of constructor for
   // details on why it may not be valid.
   bool is_valid_item() const { return item_.id != 0; }
 
   ChromeLauncherController* controller_;
 
   ash::LauncherItem item_;
 
   ash::LauncherAlignmentMenu alignment_menu_;
 
   scoped_ptr<extensions::ContextMenuMatcher> extension_items_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherContextMenu);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_