Allow Chrome OS login profile to have different default pref values

chrome/browser/prefs/browser_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_PREFS_BROWSER_PREFS_H_
 #define CHROME_BROWSER_PREFS_BROWSER_PREFS_H_
 
 class PrefRegistrySimple;
 class PrefService;
 class Profile;
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace chrome {
 
 // Register all prefs that will be used via the local state PrefService.
 void RegisterLocalState(PrefRegistrySimple* registry);
 
-// Register all prefs that will be used via a PrefService attached to a Profile.
-void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry);
+// Register all prefs that will be used via a PrefService attached to a user
+// Profile.
+void RegisterUserProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+
+#if defined(OS_CHROMEOS)
+// Register all prefs that will be used via a PrefService attached to the login
+// Profile.
+void RegisterLoginProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+#endif
 
 // Migrates prefs from |local_state| to |profile|'s pref store.
 void MigrateBrowserPrefs(Profile* profile, PrefService* local_state);
 
 // Migrates prefs in |profile|'s pref store.
 void MigrateUserPrefs(Profile* profile);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_PREFS_BROWSER_PREFS_H_