message: Use shared instead of unique ptr to avoid conversion
  addStreamDecoderFilter() takes a shared ptr.
diff: @@ -16,7 +16,7 @@ Http::FilterFactoryCb OriginalSrcConfigFactory::createFilterFactoryFromProtoType
  const std::string&, Server::Configuration::FactoryContext&) {
  Config config(proto_config);
  return [config](Http::FilterChainFactoryCallbacks& callbacks) -> void {
  - callbacks.addStreamDecoderFilter(std::make_unique<OriginalSrcFilter>(config));
  + callbacks.addStreamDecoderFilter(std::make_shared<OriginalSrcFilter>(config));
  };
  }
  