diff --git a/Source/core/html/shadow/MediaControlElementTypes.h b/Source/core/html/shadow/MediaControlElementTypes.h
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+/*
+ * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2012 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:
+ *
+ * 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.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE 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 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.
+ */
+
+#ifndef MediaControlElementTypes_h
+#define MediaControlElementTypes_h
+
+#include "core/html/HTMLDivElement.h"
+#include "core/html/HTMLInputElement.h"
+#include "core/html/HTMLMediaElement.h"
+#include "core/html/MediaControllerInterface.h"
+#include "core/rendering/RenderBlock.h"
+
+namespace WebCore {
+
+// Must match WebKitSystemInterface.h
+enum MediaControlElementType {
+    MediaEnterFullscreenButton = 0,
+    MediaMuteButton,
+    MediaPlayButton,
+    MediaSeekBackButton,
+    MediaSeekForwardButton,
+    MediaSlider,
+    MediaSliderThumb,
+    MediaRewindButton,
+    MediaReturnToRealtimeButton,
+    MediaShowClosedCaptionsButton,
+    MediaHideClosedCaptionsButton,
+    MediaUnMuteButton,
+    MediaPauseButton,
+    MediaTimelineContainer,
+    MediaCurrentTimeDisplay,
+    MediaTimeRemainingDisplay,
+    MediaStatusDisplay,
+    MediaControlsPanel,
+    MediaVolumeSliderContainer,
+    MediaVolumeSlider,
+    MediaVolumeSliderThumb,
+    MediaFullScreenVolumeSlider,
+    MediaFullScreenVolumeSliderThumb,
+    MediaVolumeSliderMuteButton,
+    MediaTextTrackDisplayContainer,
+    MediaTextTrackDisplay,
+    MediaExitFullscreenButton,
+    MediaOverlayPlayButton,
+    MediaClosedCaptionsContainer,
+    MediaClosedCaptionsTrackList,
+};
+
+HTMLMediaElement* toParentMediaElement(Node*);
+inline HTMLMediaElement* toParentMediaElement(RenderObject* renderer) { return toParentMediaElement(renderer->node()); }
+
+MediaControlElementType mediaControlElementType(Node*);
+
+const AtomicString& trackIndexAttributeName();
+int trackListIndexForElement(Element*);
+
+// ----------------------------
+
+class MediaControlElement {
+public:
+    virtual void hide();
+    virtual void show();
+    virtual bool isShowing() const;
+
+    virtual MediaControlElementType displayType() { return m_displayType; }
+    virtual const AtomicString& shadowPseudoId() const = 0;
+
+    virtual void setMediaController(MediaControllerInterface* controller) { m_mediaController = controller; }
+    virtual MediaControllerInterface* mediaController() const { return m_mediaController; }
+
+protected:
+    explicit MediaControlElement(MediaControlElementType, HTMLElement*);
+    ~MediaControlElement() { }
+
+    virtual void setDisplayType(MediaControlElementType);
+    virtual bool isMediaControlElement() const { return true; }
+
+private:
+    MediaControllerInterface* m_mediaController;
+    MediaControlElementType m_displayType;
+    HTMLElement* m_element;
+};
+
+// ----------------------------
+
+class MediaControlDivElement : public HTMLDivElement, public MediaControlElement {
+protected:
+    virtual bool isMediaControlElement() const OVERRIDE { return MediaControlElement::isMediaControlElement(); }
+    explicit MediaControlDivElement(Document*, MediaControlElementType);
+};
+
+// ----------------------------
+
+class MediaControlInputElement : public HTMLInputElement, public MediaControlElement {
+protected:
+    virtual bool isMediaControlElement() const OVERRIDE { return MediaControlElement::isMediaControlElement(); }
+    explicit MediaControlInputElement(Document*, MediaControlElementType);
+
+private:
+    virtual void updateDisplayType() { }
+};
+
+// ----------------------------
+
+class MediaControlTimeDisplayElement : public MediaControlDivElement {
+public:
+    void setCurrentValue(double);
+    double currentValue() const { return m_currentValue; }
+
+protected:
+    explicit MediaControlTimeDisplayElement(Document*, MediaControlElementType);
+
+private:
+    double m_currentValue;
+};
+
+// ----------------------------
+
+class MediaControlMuteButtonElement : public MediaControlInputElement {
+public:
+    void changedMute();
+
+    virtual bool willRespondToMouseClickEvents() OVERRIDE { return true; }
+
+protected:
+    explicit MediaControlMuteButtonElement(Document*, MediaControlElementType);
+
+    virtual void defaultEventHandler(Event*) OVERRIDE;
+
+private:
+    virtual void updateDisplayType() OVERRIDE;
+};
+
+// ----------------------------
+
+class MediaControlSeekButtonElement : public MediaControlInputElement {
+public:
+    virtual bool willRespondToMouseClickEvents() OVERRIDE { return true; }
+
+protected:
+    explicit MediaControlSeekButtonElement(Document*, MediaControlElementType);
+
+    virtual void defaultEventHandler(Event*) OVERRIDE;
+    virtual bool isForwardButton() const = 0;
+
+private:
+    void setActive(bool /*flag*/ = true, bool /*pause*/ = false);
+
+    void startTimer();
+    void stopTimer();
+    double nextRate() const;
+    void seekTimerFired(Timer<MediaControlSeekButtonElement>*);
+
+    enum ActionType { Nothing, Play, Pause };
+    ActionType m_actionOnStop;
+    enum SeekType { Skip, Scan };
+    SeekType m_seekType;
+    Timer<MediaControlSeekButtonElement> m_seekTimer;
+};
+
+// ----------------------------
+
+class MediaControlVolumeSliderElement : public MediaControlInputElement {
+public:
+    virtual bool willRespondToMouseMoveEvents() OVERRIDE;
+    virtual bool willRespondToMouseClickEvents() OVERRIDE;
+    void setVolume(double);
+    void setClearMutedOnUserInteraction(bool);
+
+protected:
+    explicit MediaControlVolumeSliderElement(Document*);
+
+    virtual void defaultEventHandler(Event*) OVERRIDE;
+
+private:
+    bool m_clearMutedOnUserInteraction;
+};
+
+} // namespace WebCore
+
+#endif // MediaControlElementTypes_h