[Sync] Remove AutofillCreditCard specifics

chrome/browser/sync/protocol/autofill_specifics.proto

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Sync protocol datatype extension for autofill.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 27 matching lines @@
   optional string address_home_city = 9;
   optional string address_home_state = 10;
   optional string address_home_zip = 11;
   optional string address_home_country = 12;
 
   // Phone + fax.
   optional string phone_home_whole_number = 13;
   optional string phone_fax_whole_number = 14;
 }
 
-message AutofillCreditCardSpecifics {
-  // User-defined label (e.g. Amazon Visa).
-  optional string label = 1;
-
-  // The cardholder's name.
-  optional string name_on_card = 2;
-
-  // The type, e.g. Mastercard.
-  optional string type = 3;
-
-  // The credit card number.
-  optional string card_number = 4;
-
-  // The expiration.
-  optional string expiration_month = 5;
-  optional string expiration_year = 6;
-
-  // The CVV.
-  optional string verification_code = 7;
-
-  // The label of the Autofill profile that contains the billing address.
-  optional string billing_address = 8;
-
-  // The label of the Autofill profile that contains the shipping address.
-  optional string shipping_address = 9;
-}
-
 message AutofillSpecifics {
   // If any of these 3 fields are present, then all 3 should be, and it implies
   // that this entity represents a classic autofill object.  In this case,
   // none of the autofill++ objects below should be present.
   optional string name = 1;
   optional string value = 2;
   repeated int64 usage_timestamp = 3;
 
   // An autofill++ profile object.  If present, indicates this entity
   // represents an AutofillProfile exclusively, and no other fields (such as
   // name/value or credit_card) should be present.
   optional AutofillProfileSpecifics profile = 4;
 
-  // An AutofillCreditCardSpecifics, encryped using Nigori (see Chromium's
-  // base/nigori.h for details).  If present, indicates this entity represents
-  // an autofill++ CreditCard, and no other fields should be present.
-  // If encryption for autofill++ is not enabled, this is unused.  See
-  // |credit_card| in that case.
-  optional bytes encrypted_credit_card = 5;
-
-  // If encryption for autofill++ is not enabled, this field stores the
-  // AutofillCreditCardSpecifics [instead of |encrypted_credit_card|].
-  optional AutofillCreditCardSpecifics credit_card = 6;
+  // Obsolete credit card fields.
+  // optional bytes deprecated_encrypted_credit_card = 5;
+  // optional AutofillCreditCardSpecifics deprecated_credit_card = 6;
 }
 
 extend EntitySpecifics {
   optional AutofillSpecifics autofill = 31729;
   optional AutofillProfileSpecifics autofill_profile = 63951;
 }