[Autofill] Fix heuristics to detect cc-number on united.com.

components/autofill/core/browser/credit_card_field.cc

Index: components/autofill/core/browser/credit_card_field.cc
diff --git a/components/autofill/core/browser/credit_card_field.cc b/components/autofill/core/browser/credit_card_field.cc
index 2fa9f6581db83a03e398c2d847a3bd143b633bac..d268b7380dcb65efc14585cea4e6779833d70fff 100644
--- a/components/autofill/core/browser/credit_card_field.cc
+++ b/components/autofill/core/browser/credit_card_field.cc
@@ -146,10 +146,11 @@ scoped_ptr<FormField> CreditCardField::Parse(AutofillScanner* scanner) {
       continue;
     }
 
+    // TODO(crbug.com/591816): Make sure parsing cc-numbers of type password
+    // doesn't have bad side effects.
     AutofillField* current_number_field;
-    if (ParseFieldSpecifics(scanner,
-                            base::UTF8ToUTF16(kCardNumberRe),
-                            kMatchNumAndTel,
+    if (ParseFieldSpecifics(scanner, base::UTF8ToUTF16(kCardNumberRe),
+                            kMatchNumAndTel | MATCH_PASSWORD,
                             &current_number_field)) {
       // Avoid autofilling any credit card number field having very low or high
       // |start_index| on the HTML form.