[Payments] Normalize billing address for response on Desktop.

components/payments/content/payment_response_helper_unittest.cc

Index: components/payments/content/payment_response_helper_unittest.cc
diff --git a/components/payments/content/payment_response_helper_unittest.cc b/components/payments/content/payment_response_helper_unittest.cc
index 658ffac56bcc6599ecae38fa4ed1e8687228bf87..e1c6f935b53b5b23037baf7287fc1d3a74e7d293 100644
--- a/components/payments/content/payment_response_helper_unittest.cc
+++ b/components/payments/content/payment_response_helper_unittest.cc
@@ -24,6 +24,8 @@
 
 namespace payments {
 
+namespace {
+
 class FakeAddressNormalizer : public AddressNormalizer {
  public:
   FakeAddressNormalizer() {}
@@ -53,6 +55,7 @@ class FakePaymentRequestDelegate : public PaymentRequestDelegate {
       : personal_data_manager_(personal_data_manager),
         locale_("en-US"),
         last_committed_url_("https://shop.com") {}
+
   void ShowDialog(PaymentRequest* request) override {}
 
   void CloseDialog() override {}
@@ -95,6 +98,8 @@ class FakePaymentRequestDelegate : public PaymentRequestDelegate {
   DISALLOW_COPY_AND_ASSIGN(FakePaymentRequestDelegate);
 };
 
+}  // namespace
+
 class PaymentResponseHelperTest : public testing::Test,
                                   public PaymentResponseHelper::Delegate {
  protected: