Fill the un-encrypted metadata field in password specifics.

components/sync/core/base_transaction.cc

 // 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.
 
 #include "components/sync/core/base_transaction.h"
 
 #include "components/sync/base/cryptographer.h"
 #include "components/sync/syncable/directory.h"
 #include "components/sync/syncable/nigori_handler.h"
 
@@ skipping 11 matching lines @@
   return GetDirectory()->GetCryptographer(this->GetWrappedTrans());
 }
 
 ModelTypeSet BaseTransaction::GetEncryptedTypes() const {
   syncable::NigoriHandler* nigori_handler = GetDirectory()->GetNigoriHandler();
   return nigori_handler
              ? nigori_handler->GetEncryptedTypes(this->GetWrappedTrans())
              : ModelTypeSet();
 }
 
+PassphraseType BaseTransaction::GetPassphraseType() const {
+  syncable::NigoriHandler* nigori_handler = GetDirectory()->GetNigoriHandler();
+  return nigori_handler
+             ? nigori_handler->GetPassphraseType(this->GetWrappedTrans())
+             : PassphraseType::IMPLICIT_PASSPHRASE;
+}
+
 }  // namespace syncer