void ZeroSuggestProvider::AddProviderInfo(ProvidersInfo* provider_info) const {
  BaseSearchProvider::AddProviderInfo(provider_info);
  if (!results_.suggest_results.empty() ||
      !results_.navigation_results.empty() ||
      !most_visited_urls_.empty())
    provider_info->back().set_times_returned_results_in_session(1);
}

Unknown