ash: Rename LauncherModelObserver to ShelfModelObserver.

ash/launcher/launcher_model.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 ASH_LAUNCHER_LAUNCHER_MODEL_H_
 #define ASH_LAUNCHER_LAUNCHER_MODEL_H_
 
 #include "ash/ash_export.h"
 #include "ash/launcher/launcher_types.h"
 #include "base/basictypes.h"
 #include "base/observer_list.h"
 
 namespace ash {
 
-class LauncherModelObserver;
+class ShelfModelObserver;
 
 // Model used by ShelfView.
 class ASH_EXPORT LauncherModel {
  public:
   enum Status {
     STATUS_NORMAL,
     // A status that indicates apps are syncing/loading.
     STATUS_LOADING,
   };
 
@@ skipping 34 matching lines @@
   // Returns an iterator into items() for the item with the specified id, or
   // items().end() if there is no item with the specified id.
   LauncherItems::const_iterator ItemByID(LauncherID id) const;
 
   const LauncherItems& items() const { return items_; }
   int item_count() const { return static_cast<int>(items_.size()); }
 
   void SetStatus(Status status);
   Status status() const { return status_; }
 
-  void AddObserver(LauncherModelObserver* observer);
-  void RemoveObserver(LauncherModelObserver* observer);
+  void AddObserver(ShelfModelObserver* observer);
+  void RemoveObserver(ShelfModelObserver* observer);
 
  private:
   // Makes sure |index| is in line with the type-based order of items. If that
   // is not the case, adjusts index by shifting it to the valid range and
   // returns the new value.
   int ValidateInsertionIndex(LauncherItemType type, int index) const;
 
   // ID assigned to the next item.
   LauncherID next_id_;
 
   LauncherItems items_;
   Status status_;
-  ObserverList<LauncherModelObserver> observers_;
+  ObserverList<ShelfModelObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherModel);
 };
 
 }  // namespace ash
 
 #endif  // ASH_LAUNCHER_LAUNCHER_MODEL_H_