Encapsulate optional SerializedScriptValue serialize/deserialize parameters.

third_party/WebKit/Source/modules/broadcastchannel/BroadcastChannel.cpp

 // Copyright 2016 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 "modules/broadcastchannel/BroadcastChannel.h"
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/events/EventQueue.h"
 #include "core/events/MessageEvent.h"
@@ skipping 44 matching lines @@
   close();
 }
 
 void BroadcastChannel::postMessage(const ScriptValue& message,
                                    ExceptionState& exceptionState) {
   if (!m_binding.is_bound()) {
     exceptionState.throwDOMException(InvalidStateError, "Channel is closed");
     return;
   }
   RefPtr<SerializedScriptValue> value = SerializedScriptValue::serialize(
-      message.isolate(), message.v8Value(), nullptr, nullptr, exceptionState);
+      message.isolate(), message.v8Value(),
+      SerializedScriptValue::SerializeOptions(), exceptionState);
   if (exceptionState.hadException())
     return;
 
   Vector<char> data;
   value->toWireBytes(data);
   Vector<uint8_t> mojoData;
   mojoData.appendVector(data);
   m_remoteClient->OnMessage(std::move(mojoData));
 }
 
@@ skipping 59 matching lines @@
   // browser.
   auto remoteCientRequest = mojo::MakeRequest(&m_remoteClient);
   m_remoteClient.set_connection_error_handler(convertToBaseCallback(
       WTF::bind(&BroadcastChannel::onError, wrapWeakPersistent(this))));
 
   provider->ConnectToChannel(m_origin, m_name, std::move(localClientInfo),
                              std::move(remoteCientRequest));
 }
 
 }  // namespace blink