Eliminate ash::internal namespace

ash/shelf/shelf.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_H_
 #define ASH_SHELF_SHELF_H_
 
 #include "ash/ash_export.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_types.h"
@@ skipping 12 matching lines @@
 
 namespace gfx {
 class Rect;
 }
 
 namespace views {
 class View;
 }
 
 namespace ash {
-
-namespace internal {
 class FocusCycler;
+class ShelfDelegate;
+class ShelfIconObserver;
 class ShelfLayoutManager;
+class ShelfModel;
 class ShelfView;
-}
+class ShelfWidget;
 
 namespace test {
 class ShelfTestAPI;
 }
 
-class ShelfDelegate;
-class ShelfIconObserver;
-class ShelfModel;
-class ShelfWidget;
 
 class ASH_EXPORT Shelf {
  public:
   static const char kNativeViewName[];
 
   Shelf(ShelfModel* model, ShelfDelegate* delegate, ShelfWidget* widget);
   virtual ~Shelf();
 
   // Return the shelf for the primary display. NULL if no user is logged in yet.
   static Shelf* ForPrimaryDisplay();
@@ skipping 50 matching lines @@
   // system.
   gfx::Rect GetVisibleItemsBoundsInScreen() const;
 
   // Returns ApplicationDragAndDropHost for this shelf.
   app_list::ApplicationDragAndDropHost* GetDragAndDropHostForAppList();
 
  private:
   friend class test::ShelfTestAPI;
 
   // ShelfView used to display icons.
-  internal::ShelfView* shelf_view_;
+  ShelfView* shelf_view_;
 
   ShelfAlignment alignment_;
 
   ShelfDelegate* delegate_;
 
   ShelfWidget* shelf_widget_;
 
   DISALLOW_COPY_AND_ASSIGN(Shelf);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_H_