Remove unused includes from core/accessibility, core/css and core/dom

Source/core/dom/MessagePort.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 15 matching lines @@
 
 #include "config.h"
 #include "core/dom/MessagePort.h"
 
 #include <wtf/text/AtomicString.h>
 #include "core/dom/Document.h"
 #include "core/dom/EventNames.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/MessageEvent.h"
 #include "core/page/DOMWindow.h"
-#include "core/platform/Timer.h"
 #include "core/workers/WorkerContext.h"
-#include "weborigin/SecurityOrigin.h"
 
 namespace WebCore {
 
 MessagePort::MessagePort(ScriptExecutionContext& scriptExecutionContext)
     : m_started(false)
     , m_closed(false)
     , m_scriptExecutionContext(&scriptExecutionContext)
 {
     ScriptWrappable::init(this);
     m_scriptExecutionContext->createdMessagePort(this);
@@ skipping 186 matching lines @@
 {
     return &m_eventTargetData;
 }
 
 EventTargetData* MessagePort::ensureEventTargetData()
 {
     return &m_eventTargetData;
 }
 
 } // namespace WebCore