Moved ExtensionPrefs and related into extensions namespace

chrome/browser/protector/protected_prefs_watcher.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_PROTECTOR_PROTECTED_PREFS_WATCHER_H_
 #define CHROME_BROWSER_PROTECTOR_PROTECTED_PREFS_WATCHER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 74 matching lines @@
   // Returns |true| if backup signature is valid.
   bool IsSignatureValid() const;
 
   // Updates the backup signature.
   void UpdateBackupSignature();
 
   // Returns data to be signed as string.
   std::string GetSignatureData(PrefService* prefs) const;
 
   // Cached set of extension IDs. They are not changed as frequently
-  ExtensionPrefs::ExtensionIdSet cached_extension_ids_;
+  extensions::ExtensionPrefs::ExtensionIdSet cached_extension_ids_;
 
   scoped_ptr<PrefSetObserver> pref_observer_;
 
   // True if the backup was valid at the profile load time.
   bool is_backup_valid_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(ProtectedPrefsWatcher);
 };
 
 }  // namespace protector
 
 #endif  // CHROME_BROWSER_PROTECTOR_PROTECTED_PREFS_WATCHER_H_