Populate versions on individual nodes in sync model and native bookmark model.

sync/internal_api/write_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 "sync/internal_api/public/write_transaction.h"
 
 #include "sync/syncable/write_transaction.h"
 
 namespace syncer {
 
 //////////////////////////////////////////////////////////////////////////
 // WriteTransaction member definitions
 WriteTransaction::WriteTransaction(const tracked_objects::Location& from_here,
                                    UserShare* share)
     : BaseTransaction(share),
       transaction_(NULL) {
   transaction_ = new syncable::WriteTransaction(from_here, syncable::SYNCAPI,
                                                 share->directory.get());
 }
 
+WriteTransaction::WriteTransaction(const tracked_objects::Location& from_here,
+                                   UserShare* share,
+                                   int64* new_model_version)
+    : BaseTransaction(share),
+      transaction_(NULL) {
+  transaction_ = new syncable::WriteTransaction(from_here,
+                                                share->directory.get(),
+                                                new_model_version);
+}
+
 WriteTransaction::~WriteTransaction() {
   delete transaction_;
 }
 
 syncable::BaseTransaction* WriteTransaction::GetWrappedTrans() const {
   return transaction_;
 }
 
 }  // namespace syncer