Add support for autofilling radio buttons and checkboxes.

chrome/test/data/autofill/heuristics/output/16_crbug_98269.out

Index: chrome/test/data/autofill/heuristics/output/16_crbug_98269.out
diff --git a/chrome/test/data/autofill/heuristics/output/16_crbug_98269.out b/chrome/test/data/autofill/heuristics/output/16_crbug_98269.out
index 1a62e8e51099ed0c26183fbc9c608d0191086662..762771066cab794f2b28eaf65ffaec607459f630 100644
--- a/chrome/test/data/autofill/heuristics/output/16_crbug_98269.out
+++ b/chrome/test/data/autofill/heuristics/output/16_crbug_98269.out
@@ -1,3 +1,4 @@
+UNKNOWN_TYPE | PaymentMethod |  | BL
 PHONE_HOME_CITY_CODE | txtHomePhone1 | * Home Phone: | 
 PHONE_HOME_NUMBER | txtHomePhone2 | * Home Phone: | 
 PHONE_HOME_NUMBER | txtHomePhone3 | * Home Phone: | 
@@ -6,9 +7,13 @@ UNKNOWN_TYPE | txtSSN | XXX-XX- |
 UNKNOWN_TYPE | selBirthMonth | * Date of Birth: | Month
 UNKNOWN_TYPE | selBirthDate | * Date of Birth: | Date
 UNKNOWN_TYPE | selBirthYear | * Date of Birth: | Year
+UNKNOWN_TYPE | chkTAC | * | on
+UNKNOWN_TYPE | PaymentMethod |  | CK
+UNKNOWN_TYPE | PaymentMethod |  | AddNew
 CREDIT_CARD_TYPE | cardType | Type: | VI
 CREDIT_CARD_NUMBER | CreditCardNumber | Number: | 
 CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR | CreditCardExpYYMM | Expiration: | 092011
 CREDIT_CARD_VERIFICATION_CODE | CVV | Security Code: | 
+UNKNOWN_TYPE | useGiftCard | QVC Gift Cards | on
 UNKNOWN_TYPE | GiftCardNum | Card Number: | 
 UNKNOWN_TYPE | GiftCardPIN | Security ID Number: |