Convert Pass()→std::move() in sync/

sync/internal_api/public/sessions/update_counters.cc

 // Copyright 2014 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/internal_api/public/sessions/update_counters.h"
 
 #include "base/json/json_string_value_serializer.h"
 #include "base/values.h"
 
 namespace syncer {
@@ skipping 21 matching lines @@
 
   value->SetInteger("numUpdatesApplied", num_updates_applied);
   value->SetInteger("numHierarchyConflictApplicationFailures",
                     num_hierarchy_conflict_application_failures);
   value->SetInteger("numEncryptionConflictApplicationFailures",
                     num_encryption_conflict_application_failures);
 
   value->SetInteger("numServerOverwrites", num_server_overwrites);
   value->SetInteger("numLocalOverwrites", num_local_overwrites);
 
-  return value.Pass();
+  return value;
 }
 
 std::string UpdateCounters::ToString() const {
   std::string result;
   scoped_ptr<base::DictionaryValue> value = ToValue();
   JSONStringValueSerializer serializer(&result);
   serializer.Serialize(*value);
   return result;
 }
 
 }  // namespace syncer