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diff --git a/src/3rdparty/webkit/WebCore/dom/WorkerThread.h b/src/3rdparty/webkit/WebCore/dom/WorkerThread.h
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+/*
+ * 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
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ *
+ */
+
+#ifndef WorkerThread_h
+#define WorkerThread_h
+
+#if ENABLE(WORKERS)
+
+#include <wtf/MessageQueue.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+
+namespace WebCore {
+
+    class KURL;
+    class String;
+    class WorkerContext;
+    class WorkerMessagingProxy;
+    class WorkerTask;
+    class WorkerThreadStartupData;
+
+    class WorkerThread : public RefCounted<WorkerThread> {
+    public:
+        static PassRefPtr<WorkerThread> create(const KURL& scriptURL, const String& userAgent, const String& sourceCode, WorkerMessagingProxy*);
+        ~WorkerThread();
+
+        bool start();
+        void stop();
+
+        ThreadIdentifier threadID() const { return m_threadID; }
+        MessageQueue<RefPtr<WorkerTask> >& messageQueue() { return m_messageQueue; }
+
+        WorkerMessagingProxy* messagingProxy() const { return m_messagingProxy; }
+
+    private:
+        WorkerThread(const KURL&, const String& userAgent, const String& sourceCode, WorkerMessagingProxy*);
+
+        static void* workerThreadStart(void*);
+        void* workerThread();
+
+        ThreadIdentifier m_threadID;
+        WorkerMessagingProxy* m_messagingProxy;
+
+        RefPtr<WorkerContext> m_workerContext;
+        Mutex m_threadCreationMutex;
+
+        MessageQueue<RefPtr<WorkerTask> > m_messageQueue;
+        OwnPtr<WorkerThreadStartupData> m_startupData;
+    };
+
+} // namespace WebCore
+
+#endif // ENABLE(WORKERS)
+
+#endif // WorkerThread_h