[rac] Show amex specific cvc hint

components/autofill/content/browser/wallet/wallet_items.cc

Index: components/autofill/content/browser/wallet/wallet_items.cc
diff --git a/components/autofill/content/browser/wallet/wallet_items.cc b/components/autofill/content/browser/wallet/wallet_items.cc
index 03cf3f442c2453c8df0caf05a9dd817561572ea8..0517ecbcdb16132aee6e108bd6b392d946073239 100644
--- a/components/autofill/content/browser/wallet/wallet_items.cc
+++ b/components/autofill/content/browser/wallet/wallet_items.cc
@@ -80,6 +80,21 @@ WalletItems::MaskedInstrument::Status
   return WalletItems::MaskedInstrument::INAPPLICABLE;
 }
 
+std::string StringIdentifierFromType(WalletItems::MaskedInstrument::Type type) {
+  switch (type) {
+    case WalletItems::MaskedInstrument::VISA:
+      return kVisaCard;
+    case WalletItems::MaskedInstrument::MASTER_CARD:
+      return kMasterCard;
+    case WalletItems::MaskedInstrument::AMEX:
+      return kAmericanExpressCard;
+    case WalletItems::MaskedInstrument::DISCOVER:
+      return kDiscoverCard;
+    default:
+      return kGenericCard;
+  }
+}
+
 }  // anonymous namespace
 
 WalletItems::MaskedInstrument::MaskedInstrument(
@@ -327,6 +342,9 @@ base::string16 WalletItems::MaskedInstrument::GetInfo(
     case CREDIT_CARD_VERIFICATION_CODE:
       break;
 
+    case CREDIT_CARD_TYPE:
+      return UTF8ToUTF16(StringIdentifierFromType(type_));
+
     default:
       NOTREACHED();
   }