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diff --git a/Source/WebCore/html/shadow/DateTimeFieldElement.h b/Source/WebCore/html/shadow/DateTimeFieldElement.h
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+++ b/Source/WebCore/html/shadow/DateTimeFieldElement.h
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+/*
+ * 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.
+ *
+ * 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.
+ */
+
+#ifndef DateTimeFieldElement_h
+#define DateTimeFieldElement_h
+
+#if ENABLE(INPUT_TYPE_TIME_MULTIPLE_FIELDS)
+
+#include "HTMLDivElement.h"
+
+namespace WebCore {
+
+class DateComponents;
+
+// DateTimeFieldElement is base class of date time field element.
+class DateTimeFieldElement : public HTMLElement {
+    WTF_MAKE_NONCOPYABLE(DateTimeFieldElement);
+
+public:
+    enum EventBehavior {
+        DispatchNoEvent,
+        DispatchEvent,
+    };
+
+    // FieldEventHandler implementer must call removeEventHandler when
+    // it doesn't handle event, e.g. at destruction.
+    class FieldEventHandler {
+    public:
+        virtual ~FieldEventHandler();
+        virtual void fieldValueChanged() = 0;
+        virtual void focusOnNextField() = 0;
+    };
+
+    virtual void defaultEventHandler(Event*) OVERRIDE;
+    virtual bool hasValue() const = 0;
+    bool isReadOnly() const;
+    void removeEventHandler() { m_fieldEventHandler = 0; }
+    void setReadOnly();
+    virtual void setEmptyValue(const DateComponents& dateForReadOnlyField, EventBehavior = DispatchNoEvent) = 0;
+    virtual void setValueAsDate(const DateComponents&) = 0;
+    virtual void setValueAsInteger(int, EventBehavior = DispatchNoEvent) = 0;
+    virtual void stepDown() = 0;
+    virtual void stepUp() = 0;
+    virtual String value() const = 0;
+    double valueAsDouble() const;
+    virtual int valueAsInteger() const = 0;
+    virtual String visibleValue() const = 0;
+
+protected:
+    DateTimeFieldElement(Document*, FieldEventHandler&);
+    void focusOnNextField();
+    virtual void handleKeyboardEvent(KeyboardEvent*) = 0;
+    void initialize(const AtomicString&);
+    virtual double unitInMillisecond() const = 0;
+    void updateVisibleValue(EventBehavior);
+
+private:
+    void defaultKeyboardEventHandler(KeyboardEvent*);
+
+    FieldEventHandler* m_fieldEventHandler;
+};
+
+} // namespace WebCore
+
+#endif
+#endif