Add currencySystem field to PaymentCurrencyAmount

third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp

Index: third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp
diff --git a/third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp b/third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp
index 06d31586667bd907e6a671fe9e07bc8dd57e4353..aae0339c5463103feda553c7ed6777ec1623099b 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp
+++ b/third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp
@@ -28,6 +28,15 @@ void setValues(PaymentItemOrPaymentShippingOption& original,
   } else {
     itemAmount.setCurrency("USD");
   }
+
+  // Currency system is "urn:iso:std:iso:4217" by default.
+  if (data == PaymentTestDataCurrencySystem) {
+    if (modificationType == PaymentTestOverwriteValue)
+      itemAmount.setCurrencySystem(valueToUse);
+    else
+      itemAmount.setCurrencySystem(String());  // null string.
+  }
+
   if (data == PaymentTestDataValue) {
     if (modificationType == PaymentTestOverwriteValue)
       itemAmount.setValue(valueToUse);