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diff --git a/Source/WebCore/html/track/DataCue.h b/Source/WebCore/html/track/DataCue.h
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+++ b/Source/WebCore/html/track/DataCue.h
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+/*
+ * Copyright (C) 2014 Cable Television Labs Inc. 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 APPLE 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 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.
+ */
+
+#pragma once
+
+#if ENABLE(VIDEO_TRACK)
+
+#include "SerializedPlatformRepresentation.h"
+#include "TextTrackCue.h"
+#include <runtime/ArrayBuffer.h>
+#include <runtime/JSCJSValue.h>
+#include <wtf/MediaTime.h>
+
+namespace WebCore {
+
+class ScriptExecutionContext;
+
+class DataCue final : public TextTrackCue {
+public:
+    static Ref<DataCue> create(ScriptExecutionContext& context, const MediaTime& start, const MediaTime& end, ArrayBuffer& data)
+    {
+        return adoptRef(*new DataCue(context, start, end, data, emptyString()));
+    }
+
+    static Ref<DataCue> create(ScriptExecutionContext& context, const MediaTime& start, const MediaTime& end, const void* data, unsigned length)
+    {
+        return adoptRef(*new DataCue(context, start, end, data, length));
+    }
+
+    static Ref<DataCue> create(ScriptExecutionContext& context, const MediaTime& start, const MediaTime& end, ArrayBuffer& data, const String& type)
+    {
+        return adoptRef(*new DataCue(context, start, end, data, type));
+    }
+
+    static Ref<DataCue> create(ScriptExecutionContext& context, const MediaTime& start, const MediaTime& end, RefPtr<SerializedPlatformRepresentation>&& platformValue, const String& type)
+    {
+        return adoptRef(*new DataCue(context, start, end, WTFMove(platformValue), type));
+    }
+
+    static Ref<DataCue> create(ScriptExecutionContext& context, double start, double end, ArrayBuffer& data)
+    {
+        return adoptRef(*new DataCue(context, MediaTime::createWithDouble(start), MediaTime::createWithDouble(end), data, emptyString()));
+    }
+    static Ref<DataCue> create(ScriptExecutionContext& context, double start, double end, JSC::JSValue value, const String& type)
+    {
+        return adoptRef(*new DataCue(context, MediaTime::createWithDouble(start), MediaTime::createWithDouble(end), value, type));
+    }
+
+    virtual ~DataCue();
+    CueType cueType() const override { return Data; }
+
+    RefPtr<JSC::ArrayBuffer> data() const;
+    void setData(JSC::ArrayBuffer&);
+
+    const SerializedPlatformRepresentation* platformValue() const { return m_platformValue.get(); }
+
+    JSC::JSValue value(JSC::ExecState&) const;
+    void setValue(JSC::ExecState&, JSC::JSValue);
+
+    String type() const { return m_type; }
+    void setType(const String& type) { m_type = type; }
+
+    bool isEqual(const TextTrackCue&, CueMatchRules) const override;
+    bool cueContentsMatch(const TextTrackCue&) const override;
+    bool doesExtendCue(const TextTrackCue&) const override;
+
+private:
+    DataCue(ScriptExecutionContext&, const MediaTime& start, const MediaTime& end, ArrayBuffer&, const String&);
+    DataCue(ScriptExecutionContext&, const MediaTime& start, const MediaTime& end, const void*, unsigned);
+    DataCue(ScriptExecutionContext&, const MediaTime& start, const MediaTime& end, RefPtr<SerializedPlatformRepresentation>&&, const String&);
+    DataCue(ScriptExecutionContext&, const MediaTime& start, const MediaTime& end, JSC::JSValue, const String&);
+
+    JSC::JSValue valueOrNull() const;
+
+    RefPtr<ArrayBuffer> m_data;
+    String m_type;
+    RefPtr<SerializedPlatformRepresentation> m_platformValue;
+    JSC::JSValue m_value;
+};
+
+DataCue* toDataCue(TextTrackCue*);
+const DataCue* toDataCue(const TextTrackCue*);
+
+} // namespace WebCore
+
+#endif