[Payments] Added region load failure tolerance and tests to PR editor.

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 d072121cf21dbc64b14569f45419cea02875cb42..e2df9cc0d4230e0fee0976705643a0cceeedc732 100644
--- a/components/payments/content/payment_response_helper_unittest.cc
+++ b/components/payments/content/payment_response_helper_unittest.cc
@@ -4,7 +4,10 @@
 
 #include "components/payments/content/payment_response_helper.h"
 
+#include <memory>
+#include <string>
 #include <utility>
+#include <vector>
 
 #include "base/memory/weak_ptr.h"
 #include "base/strings/utf_string_conversions.h"
@@ -47,6 +50,16 @@ class FakePaymentRequestDelegate : public PaymentRequestDelegate {
                                                 base::ASCIIToUTF16("123"));
   }
 
+  std::unique_ptr<const ::i18n::addressinput::Source> GetAddressInputSource()
+      override {
+    return nullptr;
+  }
+
+  std::unique_ptr<::i18n::addressinput::Storage> GetAddressInputStorage()
+      override {
+    return nullptr;
+  }
+
  private:
   autofill::PersonalDataManager* personal_data_manager_;
   std::string locale_;