Add support for Brazil Elo card in autofill.

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 a2d3e25f945b343841b73cb6eae677b72c93e358..32e1ab13300514aecbaa876e045a8b32278f4547 100644
--- a/components/autofill/core/browser/validation.cc
+++ b/components/autofill/core/browser/validation.cc
@@ -59,6 +59,8 @@ bool IsValidCreditCardNumber(const base::string16& text) {
     return false;
   if (type == kDiscoverCard && number.size() != 16)
     return false;
+  if (type == kEloCard && number.size() != 16)
+    return false;
   if (type == kJCBCard && number.size() != 16)
     return false;
   if (type == kMasterCard && number.size() != 16)
@@ -67,7 +69,8 @@ bool IsValidCreditCardNumber(const base::string16& text) {
     return false;
   if (type == kUnionPay && (number.size() < 16 || number.size() > 19))
     return false;
-  if (type == kVisaCard && number.size() != 13 && number.size() != 16)
+  if (type == kVisaCard && number.size() != 13 && number.size() != 16 &&
+      number.size() != 19)
     return false;
   if (type == kGenericCard && (number.size() < 12 || number.size() > 19))
     return false;