Add a ListModel::Move.

ui/app_list/search_result_list_view.h

 // Copyright (c) 2012 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 UI_APP_LIST_SEARCH_RESULT_LIST_VIEW_H_
 #define UI_APP_LIST_SEARCH_RESULT_LIST_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/app_list/app_list_model.h"
@@ skipping 31 matching lines @@
   // Updates UI with model.
   void Update();
 
   // Schedules an Update call using |update_factory_|. Do nothing if there is a
   // pending call.
   void ScheduleUpdate();
 
   // Overridden from ListModelObserver:
   virtual void ListItemsAdded(size_t start, size_t count) OVERRIDE;
   virtual void ListItemsRemoved(size_t start, size_t count) OVERRIDE;
+  virtual void ListItemMoved(size_t index, size_t target_index) OVERRIDE;
   virtual void ListItemsChanged(size_t start, size_t count) OVERRIDE;
 
   // Overridden from SearchResultViewDelegate:
   virtual void SearchResultActivated(SearchResultView* view,
                                      const ui::Event& event) OVERRIDE;
   virtual void SearchResultActionActivated(SearchResultView* view,
                                            int action_index,
                                            const ui::Event& event) OVERRIDE;
 
   SearchResultListViewDelegate* delegate_;  // Not owned.
   AppListModel::SearchResults* results_;  // Owned by AppListModel.
 
   int last_visible_index_;
   int selected_index_;
 
   // The factory that consolidates multiple Update calls into one.
   base::WeakPtrFactory<SearchResultListView> update_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchResultListView);
 };
 
 }  // namespace app_ist
 
 #endif  // UI_APP_LIST_SEARCH_RESULT_LIST_VIEW_H_