Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/password_manager/password_store_x.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_PASSWORD_MANAGER_PASSWORD_STORE_X_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_X_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "chrome/browser/password_manager/password_store_default.h"
 
 class LoginDatabase;
 class PrefService;
-class PrefServiceSyncable;
+class PrefRegistrySyncable;
 class Profile;
 
 // PasswordStoreX is used on Linux and other non-Windows, non-Mac OS X
 // operating systems. It uses a "native backend" to actually store the password
 // data when such a backend is available, and otherwise falls back to using the
 // login database like PasswordStoreDefault. It also handles automatically
 // migrating password data to a native backend from the login database.
 //
 // There are currently native backends for GNOME Keyring and KWallet.
 class PasswordStoreX : public PasswordStoreDefault {
@@ skipping 23 matching lines @@
   };
 
   // Takes ownership of |login_db| and |backend|. |backend| may be NULL in which
   // case this PasswordStoreX will act the same as PasswordStoreDefault.
   PasswordStoreX(LoginDatabase* login_db,
                  Profile* profile,
                  NativeBackend* backend);
 
 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS) && defined(OS_POSIX)
   // Registers the pref setting used for the methods below.
-  static void RegisterUserPrefs(PrefServiceSyncable* prefs);
+  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
 
   // Returns true if passwords have been tagged with the local profile id.
   static bool PasswordsUseLocalProfileId(PrefService* prefs);
 
   // Sets the persistent bit indicating that passwords have been tagged with the
   // local profile id. This cannot be unset; passwords get migrated only once.
   // The caller promises that |prefs| will not be deleted any time soon.
   static void SetPasswordsUseLocalProfileId(PrefService* prefs);
 #endif  // !defined(OS_MACOSX) && !defined(OS_CHROMEOS) && defined(OS_POSIX)
 
@@ skipping 46 matching lines @@
   // Whether we should allow falling back to the default store. If there is
   // nothing to migrate, then the first attempt to use the native store will
   // be the first time we try to use it and we should allow falling back. If
   // we have migrated successfully, then we do not allow falling back.
   bool allow_fallback_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordStoreX);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_X_H_