mash: Move shelf model and item classes to ash/common/shelf

ash/common/shelf/shelf_item_delegate_manager.h

 // Copyright 2013 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 ASH_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_
-#define ASH_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_
+#ifndef ASH_COMMON_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_
+#define ASH_COMMON_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_
 
 #include <map>
 #include <memory>
 
 #include "ash/ash_export.h"
-#include "ash/shelf/shelf_item_types.h"
-#include "ash/shelf/shelf_model_observer.h"
-#include "base/compiler_specific.h"
+#include "ash/common/shelf/shelf_item_types.h"
+#include "ash/common/shelf/shelf_model_observer.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 
 namespace ash {
 class ShelfItemDelegate;
 class ShelfModel;
 
 namespace test {
 class ShelfItemDelegateManagerTestAPI;
 }
@@ skipping 50 matching lines @@
 
   ShelfIDToItemDelegateMap id_to_item_delegate_map_;
 
   base::ObserverList<ShelfItemDelegateManagerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfItemDelegateManager);
 };
 
 }  // namespace ash
 
-#endif  // ASH_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_
+#endif  // ASH_COMMON_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_