Eliminate ash::internal namespace

ash/system/chromeos/audio/audio_detailed_view.cc

 // Copyright 2014 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.
 
 #include "ash/system/chromeos/audio/audio_detailed_view.h"
 
 #include "ash/system/tray/fixed_sized_scroll_view.h"
 #include "ash/system/tray/hover_highlight_view.h"
 #include "ash/system/tray/tray_constants.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 31 matching lines @@
     default:
       return base::UTF8ToUTF16(device.display_name);
   }
 }
 
 }  // namespace
 
 using chromeos::CrasAudioHandler;
 
 namespace ash {
-namespace internal {
 namespace tray {
 
 AudioDetailedView::AudioDetailedView(SystemTrayItem* owner,
                                      user::LoginStatus login)
     : TrayDetailsView(owner),
       login_(login) {
   CreateItems();
   Update();
 }
 
@@ skipping 103 matching lines @@
   } else {
     AudioDeviceMap::iterator iter = device_map_.find(sender);
     if (iter == device_map_.end())
       return;
     chromeos::AudioDevice& device = iter->second;
     CrasAudioHandler::Get()->SwitchToDevice(device);
   }
 }
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash