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diff --git a/Source/WebKit2/NetworkProcess/capture/NetworkDataTaskReplay.h b/Source/WebKit2/NetworkProcess/capture/NetworkDataTaskReplay.h
new file mode 100644
index 000000000..bd28a7d35
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+++ b/Source/WebKit2/NetworkProcess/capture/NetworkDataTaskReplay.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2016 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 INC. AND ITS 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 APPLE INC. OR ITS 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.
+ */
+
+#pragma once
+
+#if ENABLE(NETWORK_CAPTURE)
+
+#include "NetworkCaptureResource.h"
+#include "NetworkDataTask.h"
+#include <WebCore/ResourceRequest.h>
+
+namespace WebCore {
+class ResourceError;
+class ResourceResponse;
+}
+
+namespace WebKit {
+class NetworkDataTaskClient;
+class NetworkLoadParameters;
+class NetworkSession;
+}
+
+namespace WebKit {
+namespace NetworkCapture {
+
+struct RequestSentEvent;
+struct ResponseReceivedEvent;
+struct RedirectReceivedEvent;
+struct RedirectSentEvent;
+struct DataReceivedEvent;
+struct FinishedEvent;
+
+class NetworkDataTaskReplay : public NetworkDataTask {
+public:
+    static Ref<NetworkDataTaskReplay> create(NetworkSession& session, NetworkDataTaskClient& client, const NetworkLoadParameters& parameters, Resource* resource)
+    {
+        return adoptRef(*new NetworkDataTaskReplay(session, client, parameters, resource));
+    }
+
+    void replayRequestSent(const RequestSentEvent&);
+    void replayResponseReceived(const ResponseReceivedEvent&);
+    void replayRedirectReceived(const RedirectReceivedEvent&);
+    void replayRedirectSent(const RedirectSentEvent&);
+    void replayDataReceived(const DataReceivedEvent&);
+    void replayFinished(const FinishedEvent&);
+
+private:
+    NetworkDataTaskReplay(NetworkSession&, NetworkDataTaskClient&, const NetworkLoadParameters&, Resource*);
+    ~NetworkDataTaskReplay() override;
+
+    void resume() override;
+    void suspend() override;
+    void cancel() override;
+    void complete();
+    void invalidateAndCancel() override;
+
+    State state() const override { return m_state; }
+
+    void enqueueEventHandler();
+
+    enum class Error {
+        NoError = 0,
+        NotFoundError = 1,
+        MethodNotAllowed = 5
+    };
+
+    void didReceiveResponse(WebCore::ResourceResponse&&);
+    void didFinish();
+    void didFinish(Error);
+    void didFinish(const WebCore::ResourceError&);
+
+    State m_state { State::Suspended };
+    WebCore::ResourceRequest m_currentRequest;
+    Resource* m_resource;
+    Resource::EventStream m_eventStream;
+};
+
+} // namespace NetworkCapture
+} // namespace WebKit
+
+#endif // ENABLE(NETWORK_CAPTURE)