ash: Rename more Launcher classes to Shelf*.

ash/launcher/launcher_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_LAUNCHER_LAUNCHER_ITEM_DELEGATE_MANAGER_H_
-#define ASH_LAUNCHER_LAUNCHER_ITEM_DELEGATE_MANAGER_H_
-
-#include <map>
-
-#include "ash/ash_export.h"
-#include "ash/launcher/launcher_types.h"
-#include "ash/shelf/shelf_model_observer.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-
-namespace ash {
-class LauncherItemDelegate;
-class ShelfModel;
-
-namespace test {
-class LauncherItemDelegateManagerTestAPI;
-}
-
-// LauncherItemDelegateManager manages the set of LauncherItemDelegates for the
-// launcher. LauncherItemDelegateManager does not create LauncherItemDelegates,
-// rather it is expected that someone else invokes SetLauncherItemDelegate
-// appropriately. On the other hand, LauncherItemDelegateManager destroys
-// LauncherItemDelegates when the corresponding item from the model is removed.
-class ASH_EXPORT LauncherItemDelegateManager : public ShelfModelObserver {
- public:
-  explicit LauncherItemDelegateManager(ShelfModel* model);
-  virtual ~LauncherItemDelegateManager();
-
-  // Set |item_delegate| for |id| and take an ownership.
-  void SetLauncherItemDelegate(
-      ash::LauncherID id,
-      scoped_ptr<ash::LauncherItemDelegate> item_delegate);
-
-  // Returns LauncherItemDelegate for |item_type|. Always returns non-NULL.
-  LauncherItemDelegate* GetLauncherItemDelegate(ash::LauncherID id);
-
-  // ShelfModelObserver overrides:
-  virtual void ShelfItemAdded(int model_index) OVERRIDE;
-  virtual void ShelfItemRemoved(int index, ash::LauncherID id) OVERRIDE;
-  virtual void ShelfItemMoved(int start_index, int targetindex) OVERRIDE;
-  virtual void ShelfItemChanged(int index,
-                                const LauncherItem& old_item) OVERRIDE;
-  virtual void ShelfStatusChanged() OVERRIDE;
-
- private:
-  friend class ash::test::LauncherItemDelegateManagerTestAPI;
-
-  typedef std::map<ash::LauncherID, LauncherItemDelegate*>
-      LauncherIDToItemDelegateMap;
-
-  // Remove and destroy LauncherItemDelegate for |id|.
-  void RemoveLauncherItemDelegate(ash::LauncherID id);
-
-  // Owned by Shell.
-  ShelfModel* model_;
-
-  LauncherIDToItemDelegateMap id_to_item_delegate_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(LauncherItemDelegateManager);
-};
-
-}  // namespace ash
-
-#endif  // ASH_LAUNCHER_LAUNCHER_ITEM_DELEGATE_MANAGER_H_