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diff --git a/WebCore/loader/ThreadableLoaderClientWrapper.h b/WebCore/loader/ThreadableLoaderClientWrapper.h
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+/*
+ * Copyright (C) 2009 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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 ThreadableLoaderClientWrapper_h
+#define ThreadableLoaderClientWrapper_h
+
+#include "ThreadableLoaderClient.h"
+#include <wtf/Noncopyable.h>
+#include <wtf/PassRefPtr.h>
+#include <wtf/Threading.h>
+
+namespace WebCore {
+
+    class ThreadableLoaderClientWrapper : public ThreadSafeShared<ThreadableLoaderClientWrapper> {
+    public:
+        static PassRefPtr<ThreadableLoaderClientWrapper> create(ThreadableLoaderClient* client)
+        {
+            return adoptRef(new ThreadableLoaderClientWrapper(client));
+        }
+
+        void clearClient()
+        {
+            m_done = true;
+            m_client = 0;
+        }
+
+        bool done() const
+        {
+            return m_done;
+        }
+
+        void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
+        {
+            if (m_client)
+                m_client->didSendData(bytesSent, totalBytesToBeSent);
+        }
+
+        void didReceiveResponse(const ResourceResponse& response)
+        {
+            if (m_client)
+                m_client->didReceiveResponse(response);
+        }
+
+        void didReceiveData(const char* data, int lengthReceived)
+        {
+            if (m_client)
+                m_client->didReceiveData(data, lengthReceived);
+        }
+
+        void didFinishLoading(unsigned long identifier)
+        {
+            m_done = true;
+            if (m_client)
+                m_client->didFinishLoading(identifier);
+        }
+
+        void didFail(const ResourceError& error)
+        {
+            m_done = true;
+            if (m_client)
+                m_client->didFail(error);
+        }
+
+        void didFailRedirectCheck()
+        {
+            m_done = true;
+            if (m_client)
+                m_client->didFailRedirectCheck();
+        }
+
+        void didReceiveAuthenticationCancellation(const ResourceResponse& response)
+        {
+            if (m_client)
+                m_client->didReceiveResponse(response);
+        }
+
+    protected:
+        ThreadableLoaderClientWrapper(ThreadableLoaderClient* client)
+            : m_client(client)
+            , m_done(false)
+        {
+        }
+
+        ThreadableLoaderClient* m_client;
+        bool m_done;
+    };
+
+} // namespace WebCore
+
+#endif // ThreadableLoaderClientWrapper_h