Set version field when changes are made to enhanced bookmarks.

components/enhanced_bookmarks/metadata_accessor.h

 // Copyright 2014 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 COMPONENTS_ENHANCED_BOOKMARKS_METADATA_ACCESSOR_H_
 #define COMPONENTS_ENHANCED_BOOKMARKS_METADATA_ACCESSOR_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 class BookmarkModel;
 class BookmarkNode;
 class GURL;
 
+// TODO(rfevang): Remove this file once the remaining caller
+// is converted (enhanced_bookmarks_bridge.cc)
+
 // The functions in this file store and retrieve structured data encoded in the
 // bookmark metadata. This information suplements the data in the bookmark with
 // images and descriptions related to the url.
 namespace enhanced_bookmarks {
 
 typedef std::vector<const BookmarkNode*> NodeVector;
 typedef std::set<const BookmarkNode*> NodeSet;
 
 // The keys used to store the data in the bookmarks metadata dictionary.
 extern const char* kPageDataKey;
@@ skipping 50 matching lines @@
                              const GURL& image_url,
                              int image_width,
                              int image_height,
                              const GURL& thumbnail_url,
                              int thumbnail_width,
                              int thumbnail_height);
 
 }  // namespace enhanced_bookmarks
 
 #endif  // COMPONENTS_ENHANCED_BOOKMARKS_METADATA_ACCESSOR_H_