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

ash/common/shelf/shelf_item_delegate_manager.h

Index: ash/common/shelf/shelf_item_delegate_manager.h
diff --git a/ash/shelf/shelf_item_delegate_manager.h b/ash/common/shelf/shelf_item_delegate_manager.h
similarity index 90%
rename from ash/shelf/shelf_item_delegate_manager.h
rename to ash/common/shelf/shelf_item_delegate_manager.h
index 3fb52edc3832281326677ed217fc21fb12076f8d..5a863f585b91992e6c0603abaf38bd3fa015bce4 100644
--- a/ash/shelf/shelf_item_delegate_manager.h
+++ b/ash/common/shelf/shelf_item_delegate_manager.h
@@ -2,16 +2,15 @@
 // 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"
 
@@ -82,4 +81,4 @@ class ASH_EXPORT ShelfItemDelegateManager : public ShelfModelObserver {
 
 }  // namespace ash
 
-#endif  // ASH_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_
+#endif  // ASH_COMMON_SHELF_SHELF_ITEM_DELEGATE_MANAGER_H_