referrals: stats: Always RETRY_ON_NETWORK_CHANGE

Resolves brave/brave-browser#15034

Author: Kevin Kuehler

browser/brave_stats/brave_stats_updater.cc

@@ -382,6 +382,8 @@ void BraveStatsUpdater::SendServerPing() {
           ->GetURLLoaderFactory();
   simple_url_loader_ = network::SimpleURLLoader::Create(
       std::move(resource_request), traffic_annotation);
+  simple_url_loader_->SetRetryOptions(
+      1, network::SimpleURLLoader::RETRY_ON_NETWORK_CHANGE);
   simple_url_loader_->DownloadHeadersOnly(
       loader_factory,
       base::BindOnce(&BraveStatsUpdater::OnSimpleLoaderComplete,
@@ -412,6 +414,8 @@ void BraveStatsUpdater::SendUserTriggeredPing() {
           ->GetURLLoaderFactory();
   simple_url_loader_ = network::SimpleURLLoader::Create(
       std::move(resource_request), traffic_annotation);
+  simple_url_loader_->SetRetryOptions(
+      1, network::SimpleURLLoader::RETRY_ON_NETWORK_CHANGE);
   simple_url_loader_->DownloadHeadersOnly(
       loader_factory,
       base::BindOnce(&BraveStatsUpdater::OnThresholdLoaderComplete,

components/brave_referrals/browser/brave_referrals_service.cc

@@ -583,6 +583,8 @@ void BraveReferralsService::FetchReferralHeaders() {
   referral_headers_loader_ = network::SimpleURLLoader::Create(
       std::move(resource_request), traffic_annotation);
   referral_headers_loader_->SetAllowHttpErrorResults(true);
+  referral_headers_loader_->SetRetryOptions(
+      1, network::SimpleURLLoader::RetryMode::RETRY_ON_NETWORK_CHANGE);
   referral_headers_loader_->DownloadToString(
       loader_factory,
       base::BindOnce(&BraveReferralsService::OnReferralHeadersLoadComplete,
@@ -696,6 +698,8 @@ void BraveReferralsService::CheckForReferralFinalization() {
   referral_finalization_check_loader_->SetAllowHttpErrorResults(true);
   referral_finalization_check_loader_->AttachStringForUpload(
       BuildReferralFinalizationCheckPayload(), "application/json");
+  referral_finalization_check_loader_->SetRetryOptions(
+      1, network::SimpleURLLoader::RetryMode::RETRY_ON_NETWORK_CHANGE);
   referral_finalization_check_loader_->DownloadToString(
       loader_factory,
       base::BindOnce(