components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/extensions/extension_prefs.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_EXTENSIONS_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/content_settings/content_settings_store.h"
 #include "chrome/browser/extensions/extension_prefs_scope.h"
 #include "chrome/browser/extensions/extension_scoped_prefs.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/common/extensions/extension.h"
 #include "extensions/common/url_pattern_set.h"
 #include "sync/api/string_ordinal.h"
 
 class ExtensionPrefValueMap;
 class ExtensionSorting;
 class PrefService;
+
+namespace user_prefs {
 class PrefRegistrySyncable;
+}
 
 namespace extensions {
 class ExtensionPrefsUninstallExtension;
 class URLPatternSet;
 
 namespace app_file_handler_util {
 struct SavedFileEntry;
 }
 
 // Class for managing global and per-extension preferences.
@@ skipping 472 matching lines @@
   bool IsFromBookmark(const std::string& extension_id) const;
 
   // Returns true if the extension was installed as a default app.
   bool WasInstalledByDefault(const std::string& extension_id) const;
 
   // Helper method to acquire the installation time of an extension.
   // Returns base::Time() if the installation time could not be parsed or
   // found.
   base::Time GetInstallTime(const std::string& extension_id) const;
 
-  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
+  static void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry);
 
   ContentSettingsStore* content_settings_store() {
     return content_settings_store_.get();
   }
 
   // The underlying PrefService.
   PrefService* pref_service() const { return prefs_; }
 
   // The underlying ExtensionSorting.
   ExtensionSorting* extension_sorting() const {
@@ skipping 157 matching lines @@
   scoped_refptr<ContentSettingsStore> content_settings_store_;
 
   scoped_ptr<TimeProvider> time_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_