components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/ui/webui/print_preview/sticky_settings.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_UI_WEBUI_PRINT_PREVIEW_STICKY_SETTINGS_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_STICKY_SETTINGS_H_
 
 #include "printing/print_job_constants.h"
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 
 class PrintPreviewHandlerTest;
 class PrefService;
-class PrefRegistrySyncable;
 
 namespace base {
 class DictionaryValue;
 class FilePath;
 }
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 namespace printing {
 
 // Holds all the settings that should be remembered (sticky) in print preview.
 // A sticky setting will be restored next time the user launches print preview.
 // Only one instance of this class is instantiated.
 class StickySettings {
  public:
   StickySettings();
   ~StickySettings();
 
   base::FilePath* save_path();
   std::string* printer_app_state();
 
   // Stores app state for the last used printer.
   void StoreAppState(const std::string& app_state);
   // Stores the last path the user used to save to pdf.
   void StoreSavePath(const base::FilePath& path);
 
   void SaveInPrefs(PrefService* profile);
   void RestoreFromPrefs(PrefService* profile);
-  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
+  static void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry);
+
  private:
 
   scoped_ptr<base::FilePath> save_path_;
   scoped_ptr<std::string> printer_app_state_;
 };
 
 } // namespace printing
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_STICKY_SETTINGS_H_