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diff --git a/Source/WebCore/replay/ReplayingInputCursor.h b/Source/WebCore/replay/ReplayingInputCursor.h
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+++ b/Source/WebCore/replay/ReplayingInputCursor.h
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+/*
+ * Copyright (C) 2013 University of Washington. All rights reserved.
+ * Copyright (C) 2014 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 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
+ * HOLDER 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.
+ */
+
+#pragma once
+
+#if ENABLE(WEB_REPLAY)
+
+#include <replay/InputCursor.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class EventLoopInputBase;
+class EventLoopInputDispatcher;
+class EventLoopInputDispatcherClient;
+class Page;
+class ReplaySessionSegment;
+
+struct EventLoopInputData {
+    EventLoopInputBase* input;
+    double timestamp;
+};
+
+class ReplayingInputCursor final : public InputCursor {
+    WTF_MAKE_NONCOPYABLE(ReplayingInputCursor);
+public:
+    static Ref<ReplayingInputCursor> create(RefPtr<ReplaySessionSegment>&&, Page&, EventLoopInputDispatcherClient*);
+    virtual ~ReplayingInputCursor();
+
+    bool isCapturing() const override { return false; }
+    bool isReplaying() const override { return true; }
+
+    EventLoopInputDispatcher& dispatcher() const { return *m_dispatcher; }
+
+    EventLoopInputData loadEventLoopInput();
+protected:
+    NondeterministicInputBase* loadInput(InputQueue, const String& type) override;
+private:
+    ReplayingInputCursor(RefPtr<ReplaySessionSegment>&&, Page&, EventLoopInputDispatcherClient*);
+
+    void storeInput(std::unique_ptr<NondeterministicInputBase>) override;
+    NondeterministicInputBase* uncheckedLoadInput(InputQueue) override;
+
+    RefPtr<ReplaySessionSegment> m_segment;
+    std::unique_ptr<EventLoopInputDispatcher> m_dispatcher;
+    Vector<size_t> m_positions;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(WEB_REPLAY)