Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/password_manager/password_store_x.cc

Index: chrome/browser/password_manager/password_store_x.cc
diff --git a/chrome/browser/password_manager/password_store_x.cc b/chrome/browser/password_manager/password_store_x.cc
index f1e29c3ae220706fd65eed6697e997c9765d7a5f..08ad4d71c3be4fbcd15b3573a8979c81250ffcb2 100644
--- a/chrome/browser/password_manager/password_store_x.cc
+++ b/chrome/browser/password_manager/password_store_x.cc
@@ -267,11 +267,11 @@ ssize_t PasswordStoreX::MigrateLogins() {
 
 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS) && defined(OS_POSIX)
 // static
-void PasswordStoreX::RegisterUserPrefs(PrefService* prefs) {
+void PasswordStoreX::RegisterUserPrefs(PrefServiceSyncable* prefs) {
   // Normally we should be on the UI thread here, but in tests we might not.
   prefs->RegisterBooleanPref(prefs::kPasswordsUseLocalProfileId,
                              false,  // default: passwords don't use local ids
-                             PrefService::UNSYNCABLE_PREF);
+                             PrefServiceSyncable::UNSYNCABLE_PREF);
 }
 
 // static