[Sync] Expose change location in GenericChangeProcessor errors

sync/api/sync_change.cc

 // 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.
 
 #include "sync/api/sync_change.h"
 
 #include <ostream>
 
 namespace syncer {
 
@@ skipping 34 matching lines @@
 }
 
 SyncChange::SyncChangeType SyncChange::change_type() const {
   return change_type_;
 }
 
 SyncData SyncChange::sync_data() const {
   return sync_data_;
 }
 
+tracked_objects::Location SyncChange::location() const {
+  return location_;
+}
+
 // static
 std::string SyncChange::ChangeTypeToString(SyncChangeType change_type) {
   switch (change_type) {
     case ACTION_INVALID:
       return "ACTION_INVALID";
     case ACTION_ADD:
       return "ACTION_ADD";
     case ACTION_UPDATE:
       return "ACTION_UPDATE";
     case ACTION_DELETE:
       return "ACTION_DELETE";
     default:
       NOTREACHED();
   }
   return std::string();
 }
 
 std::string SyncChange::ToString() const {
   return "{ " + location_.ToString() + ", changeType: " +
       ChangeTypeToString(change_type_) + ", syncData: " +
       sync_data_.ToString() + "}";
 }
 
 void PrintTo(const SyncChange& sync_change, std::ostream* os) {
   *os << sync_change.ToString();
 }
 
 }  // namespace syncer