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

chrome/browser/media_galleries/media_galleries_preferences.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_MEDIA_GALLERIES_PREFERENCES_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_PREFERENCES_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 15 matching lines @@
 
 namespace extensions {
 class Extension;
 class ExtensionPrefs;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
-namespace chrome {
-
 typedef uint64 MediaGalleryPrefId;
 const MediaGalleryPrefId kInvalidMediaGalleryPrefId = 0;
 
 struct MediaGalleryPermission {
   MediaGalleryPrefId pref_id;
   bool has_permission;
 };
 
 struct MediaGalleryPrefInfo {
   enum Type {
@@ skipping 249 matching lines @@
 
   // A mapping from device id to the set of gallery pref ids on that device.
   // All pref ids in |device_map_| are also in |known_galleries_|.
   DeviceIdPrefIdsMap device_map_;
 
   ObserverList<GalleryChangeObserver> gallery_change_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesPreferences);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_PREFERENCES_H_