message: Fixed remaining PB build breaks
diff: @@ -77,7 +77,7 @@ message NodeProto {
  optional string op_type = 4; // namespace Operator
  // Additional named attributes.
  - repeated NameValuePairProto attribute = 5;
  + repeated ValueProto.NameValuePairProto attribute = 5;
  // A human-readable documentation for this graph. Markdown is allowed.
  optional string doc_string = 6;
  