[Sync] Rely on directory to decide which types need to be purged

sync/test/engine/test_syncable_utils.cc

 // Copyright 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.
 
 // Utilities to verify the state of items in unit tests.
 
 #include "sync/test/engine/test_syncable_utils.h"
 
 #include "sync/syncable/directory.h"
 #include "sync/syncable/entry.h"
@@ skipping 72 matching lines @@
   node.PutServerVersion(20);
   node.PutBaseVersion(20);
   node.PutIsDel(false);
   node.PutId(syncer::TestIdFactory::MakeServer(tag_name));
   sync_pb::EntitySpecifics specifics;
   syncer::AddDefaultFieldValue(type, &specifics);
   node.PutServerSpecifics(specifics);
   node.PutSpecifics(specifics);
 }
 
+sync_pb::DataTypeProgressMarker BuildProgress(ModelType type) {
+  sync_pb::DataTypeProgressMarker progress;
+  progress.set_token("token");
+  progress.set_data_type_id(GetSpecificsFieldNumberFromModelType(type));
+  return progress;
+}
+
 }  // namespace syncable
 }  // namespace syncer