Remove Blink-WebKit-only document.createEvent strings

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp

 // Copyright 2015 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/serviceworkers/ServiceWorkerMessageEvent.h"
 
 namespace blink {
 
-ServiceWorkerMessageEvent::ServiceWorkerMessageEvent()
-{
-}
-
 ServiceWorkerMessageEvent::ServiceWorkerMessageEvent(const AtomicString& type, const ServiceWorkerMessageEventInit& initializer)
     : Event(type, initializer)
 {
     if (initializer.hasOrigin())
         m_origin = initializer.origin();
     if (initializer.hasLastEventId())
         m_lastEventId = initializer.lastEventId();
     if (initializer.hasSource()) {
         if (initializer.source().isServiceWorker())
             m_sourceAsServiceWorker = initializer.source().getAsServiceWorker();
@@ skipping 55 matching lines @@
 
 DEFINE_TRACE(ServiceWorkerMessageEvent)
 {
     visitor->trace(m_sourceAsServiceWorker);
     visitor->trace(m_sourceAsMessagePort);
     visitor->trace(m_ports);
     Event::trace(visitor);
 }
 
 } // namespace blink