Removing ash::Shelf::shelf_model()

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

 // Copyright 2016 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_EXTENSION_LAUNCHER_CONTEXT_MENU_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_EXTENSION_LAUNCHER_CONTEXT_MENU_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
 
 class ChromeLauncherController;
 
 namespace ash {
 class Shelf;
 struct ShelfItem;
-class ShelfModel;
 }
 
 namespace extensions {
 class ContextMenuMatcher;
 }
 
 // Class for context menu which is shown for a regular extension item in the
 // shelf.
 class ExtensionLauncherContextMenu : public LauncherContextMenu {
  public:
   ExtensionLauncherContextMenu(ChromeLauncherController* controller,
                                const ash::ShelfItem* item,
                                ash::Shelf* shelf);
   ~ExtensionLauncherContextMenu() override;
 
   // ui::SimpleMenuModel::Delegate overrides:
   bool IsItemForCommandIdDynamic(int command_id) const override;
   base::string16 GetLabelForCommandId(int command_id) const override;
   bool IsCommandIdChecked(int command_id) const override;
   bool IsCommandIdEnabled(int command_id) const override;
   void ExecuteCommand(int command_id, int event_flags) override;
 
  private:
   void Init();
 
   std::unique_ptr<extensions::ContextMenuMatcher> extension_items_;
-  ash::ShelfModel* shelf_model_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionLauncherContextMenu);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_EXTENSION_LAUNCHER_CONTEXT_MENU_H_