Cleanup: Remove chrome namespace for storage monitor and media galleries.

chrome/browser/media_galleries/fileapi/mtp_device_map_service.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 CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_MAP_SERVICE_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_MAP_SERVICE_H_
 
 #include <map>
 
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/threading/thread_checker.h"
 
-namespace chrome {
-
 class MTPDeviceAsyncDelegate;
 
 // This class provides media transfer protocol (MTP) device delegate to
 // complete media file system operations.
 class MTPDeviceMapService {
  public:
   static MTPDeviceMapService* GetInstance();
 
   // Adds the MTP device delegate to the map service. |device_location|
   // specifies the mount location of the MTP device.
@@ skipping 29 matching lines @@
   // Following member variables are used to manage asynchronous              //
   // MTP device delegate objects.                                            //
   /////////////////////////////////////////////////////////////////////////////
   // Map of attached mtp device async delegates.
   AsyncDelegateMap async_delegate_map_;
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceMapService);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_MAP_SERVICE_H_