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

chrome/browser/sync/glue/bookmark_change_processor.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_SYNC_GLUE_BOOKMARK_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_BOOKMARK_CHANGE_PROCESSOR_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 96 matching lines @@
   // will be transferred to the new node.  A node corresponding to |parent|
   // must already exist and be associated for this call to succeed.  Returns
   // the ID of the just-created node, or if creation fails, kInvalidID.
   static int64 CreateSyncNode(const BookmarkNode* parent,
                               BookmarkModel* model,
                               int index,
                               syncer::WriteTransaction* trans,
                               BookmarkModelAssociator* associator,
                               DataTypeErrorHandler* error_handler);
 
+  // Update transaction version of |model| and |nodes| to |new_version| if
+  // it's valid.
+  static void UpdateTransactionVersion(
+      int64 new_version,
+      BookmarkModel* model,
+      const std::vector<const BookmarkNode*>& nodes);
+
  protected:
   virtual void StartImpl(Profile* profile) OVERRIDE;
 
  private:
   enum MoveOrCreate {
     MOVE,
     CREATE,
   };
 
   // Helper function to determine the appropriate insertion index of sync node
@@ skipping 45 matching lines @@
 
   // The two models should be associated according to this ModelAssociator.
   BookmarkModelAssociator* model_associator_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkChangeProcessor);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_BOOKMARK_CHANGE_PROCESSOR_H_