Eliminate ash::internal namespace

ash/display/display_manager.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_DISPLAY_DISPLAY_MANAGER_H_
 #define ASH_DISPLAY_DISPLAY_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 namespace gfx {
 class Display;
 class Insets;
 class Rect;
 class Screen;
 }
 
 namespace ash {
 class AcceleratorControllerTest;
 class DisplayController;
+class DisplayLayoutStore;
 class ScreenAsh;
 
 namespace test {
 class DisplayManagerTestApi;
 class SystemGestureEventFilterTest;
 }
-namespace internal {
-class DisplayLayoutStore;
 
 // DisplayManager maintains the current display configurations,
 // and notifies observers when configuration changes.
 //
 // TODO(oshima): Make this non internal.
 class ASH_EXPORT DisplayManager
 #if defined(OS_CHROMEOS)
     : public ui::OutputConfigurator::SoftwareMirroringController
 #endif
       {
@@ skipping 307 matching lines @@
   // on device as well as during the unit tests.
   bool change_display_upon_host_resize_;
 
   SecondDisplayMode second_display_mode_;
   int64 mirrored_display_id_;
   gfx::Display non_desktop_display_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_MANAGER_H_