AutoFill Empty profiles should not be saved from AutoFillDialog Add and Edit sheets on Mac.

chrome/browser/autofill/credit_card.cc

Index: chrome/browser/autofill/credit_card.cc
diff --git a/chrome/browser/autofill/credit_card.cc b/chrome/browser/autofill/credit_card.cc
index 4a9483efae9e83fa69fcb1112be808f697bc57ac..de2a740824ed61001f05d6804fdcede9666785f4 100644
--- a/chrome/browser/autofill/credit_card.cc
+++ b/chrome/browser/autofill/credit_card.cc
@@ -306,6 +306,7 @@ bool CreditCard::operator!=(const CreditCard& creditcard) const {
 }
 
 // Use the Luhn formula to validate the number.
+// static
 bool CreditCard::IsCreditCardNumber(const string16& text) {
   string16 number;
   RemoveChars(text, kCreditCardSeparators.c_str(), &number);
@@ -330,6 +331,13 @@ bool CreditCard::IsCreditCardNumber(const string16& text) {
   return (sum % 10) == 0;
 }
 
+bool CreditCard::IsEmpty() const {
+  FieldTypeSet types;
+  GetAvailableFieldTypes(&types);
+  return types.empty() && billing_address().empty();
+}
+
+
 string16 CreditCard::ExpirationMonthAsString() const {
   if (expiration_month_ == 0)
     return string16();