content/browser: Move more files into the content namespace.

content/browser/system_message_window_win.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 CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
 #define CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
 
 #include <windows.h>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 
+namespace content {
+
 class CONTENT_EXPORT SystemMessageWindowWin {
  public:
   SystemMessageWindowWin();
 
   virtual ~SystemMessageWindowWin();
 
   virtual LRESULT OnDeviceChange(UINT event_type, LPARAM data);
 
  private:
   void Init();
@@ skipping 13 matching lines @@
   }
 
   HMODULE instance_;
   HWND window_;
   class DeviceNotifications;
   scoped_ptr<DeviceNotifications> device_notifications_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemMessageWindowWin);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_