[Payment Request] Displays appropriate footer if first transaction completed

ios/chrome/browser/payments/test_payment_request.mm

Index: ios/chrome/browser/payments/test_payment_request.mm
diff --git a/ios/chrome/browser/payments/test_payment_request.mm b/ios/chrome/browser/payments/test_payment_request.mm
index be46d8a30b2423434ffa8c5f8ad771db6d06e9f9..171ba59c4e11eec9b7a3b0127bd5ba16d665a476 100644
--- a/ios/chrome/browser/payments/test_payment_request.mm
+++ b/ios/chrome/browser/payments/test_payment_request.mm
@@ -7,6 +7,7 @@
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/autofill/core/browser/region_data_loader.h"
 #include "components/payments/core/payments_profile_comparator.h"
+#include "components/prefs/pref_service.h"
 #include "ios/web/public/payments/payment_request.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
@@ -31,6 +32,12 @@ autofill::RegionDataLoader* TestPaymentRequest::GetRegionDataLoader() {
   return PaymentRequest::GetRegionDataLoader();
 }
 
+PrefService* TestPaymentRequest::GetPrefService() {
+  if (pref_service_)
+    return pref_service_;
+  return PaymentRequest::GetPrefService();
+}
+
 payments::PaymentsProfileComparator* TestPaymentRequest::profile_comparator() {
   if (profile_comparator_)
     return profile_comparator_;