Add billing address identifier to WalletMaskedCard.

sync/protocol/autofill_specifics.proto

 // Copyright (c) 2012 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 93 matching lines @@
   optional WalletCardType type = 4;
 
   // Last 4 digits of the credit card number.
   optional string last_four = 5;
 
   // Month number 1-12.
   optional int32 exp_month = 6;
 
   // Four-digit year (e.g. 2017).
   optional int32 exp_year = 7;
+
+  // The WalletPostalAddress.id of the billing address.
+  optional string billing_address_id = 8;

[Nicolas Zea, 2016/06/09 22:59:02]

update proto_value_conversions.cc as well?

[please use gerrit instead, 2016/06/10 01:22:20]

Done.

 }
 
 // Different than an AutofillProfile because this represents some known address
 // on the server that is pulled down rather than synced between Chromes.
 message WalletPostalAddress {
-  // DEPRECATED
   optional string id = 1;
 
   optional string recipient_name = 12;
   optional string company_name = 2;
 
   // This is the street address, of which there may be multiple lines. This
   // corresponds to "address_home_line[1|2] in the AutofillProfileSpecifics
   // message above. In some locales there may be more than two lines.
   repeated string street_address = 3;
 
@@ skipping 72 matching lines @@
   // - Language code
   optional string id = 2;
 
   // The number of times that this Wallet card or address was used.
   optional int64 use_count = 3;
 
   // The last use date of this Wallet card or address. Measured in microseconds
   // since the Windows epoch (1601).
   optional int64 use_date = 4;
 }