Eliminate ash::internal namespace

ash/system/chromeos/network/tray_network_state_observer.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_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H
 #define ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "chromeos/network/network_state_handler_observer.h"
 
 namespace ash {
-namespace internal {
 
 class TrayNetworkStateObserver : public chromeos::NetworkStateHandlerObserver {
  public:
   class Delegate {
    public:
     // Called when the network state may have changed. If |list_changed| is
     // true then the list of networks may have changed.
     virtual void NetworkStateChanged(bool list_changed) = 0;
 
     // Called when the properties for |network| may have been updated.
@@ skipping 16 matching lines @@
   virtual void NetworkPropertiesUpdated(
       const chromeos::NetworkState* network) OVERRIDE;
 
  private:
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayNetworkStateObserver);
 };
 
 }  // namespace ash
-}  // namespace internal
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H