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diff --git a/Source/WebCore/Modules/mediastream/MediaDeviceInfo.h b/Source/WebCore/Modules/mediastream/MediaDeviceInfo.h
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+++ b/Source/WebCore/Modules/mediastream/MediaDeviceInfo.h
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+/*
+ * Copyright (C) 2015 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(MEDIA_STREAM)
+
+#include "ContextDestructionObserver.h"
+#include "ScriptWrappable.h"
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+
+class MediaDeviceInfo : public RefCounted<MediaDeviceInfo>, public ScriptWrappable, private ContextDestructionObserver {
+public:
+    enum class Kind { Audioinput, Audiooutput, Videoinput };
+
+    static Ref<MediaDeviceInfo> create(ScriptExecutionContext*, const String&, const String&, const String&, Kind);
+
+    const String& label() const { return m_label; }
+    const String& deviceId() const { return m_deviceId; }
+    const String& groupId() const { return m_groupId; }
+    Kind kind() const { return m_kind; }
+
+private:
+    MediaDeviceInfo(ScriptExecutionContext*, const String&, const String&, const String&, Kind);
+
+    const String m_label;
+    const String m_deviceId;
+    const String m_groupId;
+    const Kind m_kind;
+};
+
+typedef Vector<RefPtr<MediaDeviceInfo>> MediaDeviceInfoVector;
+
+}
+
+#endif