mash: Use mojo for ShelfItemDelegate and [app] MenuItem.

ash/common/shelf/shelf_application_menu_model.h

Index: ash/common/shelf/shelf_application_menu_model.h
diff --git a/ash/common/shelf/shelf_application_menu_model.h b/ash/common/shelf/shelf_application_menu_model.h
index 7abe8b54e247b73c86f752a0f05295dae64415d8..af97218b395cafe4e5d39a9c99e52b7d82e43a20 100644
--- a/ash/common/shelf/shelf_application_menu_model.h
+++ b/ash/common/shelf/shelf_application_menu_model.h
@@ -9,7 +9,7 @@
 #include <vector>
 
 #include "ash/ash_export.h"
-#include "ash/public/cpp/shelf_application_menu_item.h"
+#include "ash/common/shelf/shelf_item_delegate.h"
 #include "base/macros.h"
 #include "ui/base/models/simple_menu_model.h"
 
@@ -21,10 +21,10 @@ class ShelfItemDelegate;
 // A menu model listing open applications associated with a shelf item. Layout:
 // +---------------------------+
 // |                           |
-// |        App Title          |
+// |         Shelf Item Title  |
 // |                           |
-// | [Icon] Item Title         |
-// | [Icon] Item Title         |
+// |  [Icon] Menu Item Label   |
+// |  [Icon] Menu Item Label   |
 // |                           |
 // +---------------------------+
 class ASH_EXPORT ShelfApplicationMenuModel
@@ -34,7 +34,7 @@ class ASH_EXPORT ShelfApplicationMenuModel
   // Makes a menu with a |title|, separators, and |items| for |delegate|.
   // |delegate| may be null in unit tests that do not execute commands.
   ShelfApplicationMenuModel(const base::string16& title,
-                            ShelfAppMenuItemList items,
+                            ShelfItemDelegate::MenuItemList items,
                             ShelfItemDelegate* delegate);
   ~ShelfApplicationMenuModel() override;
 
@@ -51,7 +51,7 @@ class ASH_EXPORT ShelfApplicationMenuModel
                                      int num_menu_items_enabled);
 
   // The list of menu items as returned from the shelf item's controller.
-  ShelfAppMenuItemList items_;
+  ShelfItemDelegate::MenuItemList items_;
 
   // The shelf item delegate that created the menu and executes its commands.
   ShelfItemDelegate* delegate_;