rAc: fix some validation issues

components/autofill/core/browser/validation.cc

Index: components/autofill/core/browser/validation.cc
diff --git a/components/autofill/core/browser/validation.cc b/components/autofill/core/browser/validation.cc
index dc5ddd33bce9a7f0e9bd5447f48f6645bddf92e3..177785d4c6faa06d097ae6555160dfb73dec1aeb 100644
--- a/components/autofill/core/browser/validation.cc
+++ b/components/autofill/core/browser/validation.cc
@@ -128,10 +128,9 @@ bool IsValidCreditCardSecurityCode(const base::string16& text) {
 
 bool IsValidCreditCardSecurityCode(const base::string16& code,
                                    const base::string16& number) {
-  CreditCard card;
-  card.SetRawInfo(CREDIT_CARD_NUMBER, number);
+  std::string type = CreditCard::GetCreditCardType(number);
   size_t required_length = 3;
-  if (card.type() == kAmericanExpressCard)
+  if (type == kAmericanExpressCard)
     required_length = 4;
 
   return code.length() == required_length;