Revert 179491 due to performance regression.

chrome/test/data/autofill/heuristics/output/05_checkout_overstock.com.out

Index: chrome/test/data/autofill/heuristics/output/05_checkout_overstock.com.out
===================================================================
--- chrome/test/data/autofill/heuristics/output/05_checkout_overstock.com.out	(revision 179750)
+++ chrome/test/data/autofill/heuristics/output/05_checkout_overstock.com.out	(working copy)
@@ -7,8 +7,6 @@
 ADDRESS_BILLING_ZIP | BillingZipCode | Zip | 95014
 PHONE_HOME_WHOLE_NUMBER | BillingDaytimePhone | Day Phone | 4088737223
 PHONE_HOME_WHOLE_NUMBER | BillingEveningPhone | Evening Phone | 
-UNKNOWN_TYPE | checkbox2 | *Required Field | on
-UNKNOWN_TYPE | diffShip | *Required Field | on
 NAME_FIRST | ShippingFirstName | First Name | 
 NAME_LAST | ShippingLastName | Last Name | 
 ADDRESS_HOME_LINE1 | lineone | Address Line 1 | 7540 Donegal Dr
@@ -18,15 +16,10 @@
 ADDRESS_HOME_STATE | state | State | CA
 ADDRESS_HOME_ZIP | zip | Zip | 95014
 UNKNOWN_TYPE | product6496917 | Black-plated Tungsten Carbide Comfort Fit Band (8 mm) Options: 10 1 | GROUND6496917
-UNKNOWN_TYPE | CC |  | CreditCardValue
 CREDIT_CARD_NUMBER | CC_number | Credit Card #: | 
 CREDIT_CARD_EXP_MONTH | exp_month | Expiration Date: | 0
 CREDIT_CARD_EXP_4_DIGIT_YEAR | exp_year | Expiration Date: | 
-UNKNOWN_TYPE | CC |  | PayPal
-UNKNOWN_TYPE | CC |  | bml
-UNKNOWN_TYPE | UsePromoCode | See Terms | on
 UNKNOWN_TYPE | PromoCode | See Terms | 
-UNKNOWN_TYPE | UseGiftCards | See Terms | on
 UNKNOWN_TYPE | GiftCardNumber0 | Gift Card 1: | 
 UNKNOWN_TYPE | PINNumber0 | PIN: | 
 UNKNOWN_TYPE | GiftCardNumber1 | Gift Card 2: |