Add support for method selection in the Payment Request UI on iOS.

components/autofill/core/browser/autofill_data_util.cc

Index: components/autofill/core/browser/autofill_data_util.cc
diff --git a/components/autofill/core/browser/autofill_data_util.cc b/components/autofill/core/browser/autofill_data_util.cc
index 955a6c20f8d2970e212d61ae6febe04dd7643ddf..3040d6c635684db53c50e40793bfea1145f47136 100644
--- a/components/autofill/core/browser/autofill_data_util.cc
+++ b/components/autofill/core/browser/autofill_data_util.cc
@@ -18,6 +18,21 @@ namespace autofill {
 namespace data_util {
 
 namespace {
+// Mappings from Chrome card types to Payment Request API basic card payment
+// spec types and icons. Note that "generic" is not in the spec.
+// https://w3c.github.io/webpayments-methods-card/#method-id
+const PaymentRequestData kPaymentRequestData[]{
+    {"americanExpressCC", "amex", IDR_AUTOFILL_PR_AMEX},
+    {"dinersCC", "diners", IDR_AUTOFILL_PR_DINERS},
+    {"discoverCC", "discover", IDR_AUTOFILL_PR_DISCOVER},
+    {"jcbCC", "jcb", IDR_AUTOFILL_PR_JCB},
+    {"masterCardCC", "mastercard", IDR_AUTOFILL_PR_MASTERCARD},
+    {"unionPayCC", "unionpay", IDR_AUTOFILL_PR_UNIONPAY},
+    {"visaCC", "visa", IDR_AUTOFILL_PR_VISA},
+};
+const PaymentRequestData kGenericPaymentRequestData = {"genericCC", "generic",
+                                                       IDR_AUTOFILL_PR_GENERIC};
+
 const char* const name_prefixes[] = {
     "1lt",     "1st", "2lt", "2nd",    "3rd",  "admiral", "capt",
     "captain", "col", "cpt", "dr",     "gen",  "general", "lcdr",
@@ -383,5 +398,23 @@ bool ProfileMatchesFullName(const base::string16 full_name,
   return false;
 }
 
+const PaymentRequestData& GetPaymentRequestData(const std::string& type) {
+  for (size_t i = 0; i < arraysize(kPaymentRequestData); ++i) {
+    if (type == kPaymentRequestData[i].card_type)
+      return kPaymentRequestData[i];
+  }
+  return kGenericPaymentRequestData;
+}
+
+const char* GetCardTypeForBasicCardPaymentType(
+    const std::string& basic_card_payment_type) {
+  for (size_t i = 0; i < arraysize(kPaymentRequestData); ++i) {
+    if (basic_card_payment_type ==
+        kPaymentRequestData[i].basic_card_payment_type)

[Evan Stade, 2016/08/30 16:06:18]

nit: curlies

(side note: this file isn't consistent but seems to err on the side of curlies)

[Justin Donnelly, 2016/08/30 17:29:17]

Done.

+      return kPaymentRequestData[i].card_type;
+  }
+  return kGenericPaymentRequestData.card_type;
+}
+
 }  // namespace data_util
 }  // namespace autofill