mash: Move ownership of ShelfDelegate to WmShell

ash/shelf/shelf_delegate.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_DELEGATE_H_
-#define ASH_SHELF_SHELF_DELEGATE_H_
-
-#include "ash/ash_export.h"
-#include "ash/common/shelf/shelf_item_types.h"
-
-namespace ash {
-class Shelf;
-
-// Delegate for the Shelf.
-class ASH_EXPORT ShelfDelegate {
- public:
-  // Shelf owns the delegate.
-  virtual ~ShelfDelegate() {}
-
-  // Callback used to allow delegate to perform initialization actions that
-  // depend on the Shelf being in a known state.
-  virtual void OnShelfCreated(Shelf* shelf) = 0;
-
-  // Callback used to inform the delegate that a specific shelf no longer
-  // exists.
-  virtual void OnShelfDestroyed(Shelf* shelf) = 0;
-
-  // Called when |shelf|'s alignment changes.
-  virtual void OnShelfAlignmentChanged(Shelf* shelf) = 0;
-
-  // Called when |shelf|'s auto-hide behavior changes.
-  virtual void OnShelfAutoHideBehaviorChanged(Shelf* shelf) = 0;
-
-  // Called when |shelf|'s auto-hide state changes.
-  virtual void OnShelfAutoHideStateChanged(Shelf* shelf) = 0;
-
-  // Called when |shelf|'s visibility state is committed.
-  virtual void OnShelfVisibilityStateChanged(Shelf* shelf) = 0;
-
-  // Get the shelf ID from an application ID.
-  virtual ShelfID GetShelfIDForAppID(const std::string& app_id) = 0;
-
-  // Checks whether a mapping exists from the ShelfID |id| to an app id.
-  virtual bool HasShelfIDToAppIDMapping(ShelfID id) const = 0;
-
-  // Get the application ID for a given shelf ID.
-  // |HasShelfIDToAppIDMapping(ShelfID)| should be called first to ensure the
-  // ShelfID can be successfully mapped to an app id.
-  virtual const std::string& GetAppIDForShelfID(ShelfID id) = 0;
-
-  // Pins an app with |app_id| to shelf. A running instance will get pinned.
-  // In case there is no running instance a new shelf item is created and
-  // pinned.
-  virtual void PinAppWithID(const std::string& app_id) = 0;
-
-  // Check if the app with |app_id_| is pinned to the shelf.
-  virtual bool IsAppPinned(const std::string& app_id) = 0;
-
-  // Unpins app item with |app_id|.
-  virtual void UnpinAppWithID(const std::string& app_id) = 0;
-};
-
-}  // namespace ash
-
-#endif  // ASH_SHELF_SHELF_DELEGATE_H_