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diff --git a/Source/WebKit2/UIProcess/qt/QtTapGestureRecognizer.h b/Source/WebKit2/UIProcess/qt/QtTapGestureRecognizer.h
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+++ b/Source/WebKit2/UIProcess/qt/QtTapGestureRecognizer.h
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+/*
+ * Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ * 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 QtTapGestureRecognizer_h
+#define QtTapGestureRecognizer_h
+
+#include "QtGestureRecognizer.h"
+
+#include <QtCore/QBasicTimer>
+#include <QtCore/QObject>
+#include <QtCore/QtGlobal>
+#include <wtf/OwnPtr.h>
+
+QT_BEGIN_NAMESPACE
+class QTouchEvent;
+QT_END_NAMESPACE
+
+// FIXME: These constants should possibly depend on DPI.
+const qreal initialTriggerDistanceThreshold = 5;
+const qreal maxDoubleTapDistance = 120;
+const int tapAndHoldTime = 800;
+const int doubleClickInterval = 400;
+
+class QtWebPageEventHandler;
+
+namespace WebKit {
+
+class QtTapGestureRecognizer : public QObject, private QtGestureRecognizer {
+public:
+    QtTapGestureRecognizer(QtWebPageEventHandler*);
+    bool recognize(const QTouchEvent*, qint64 eventTimestampMillis);
+    void reset();
+
+protected:
+    void timerEvent(QTimerEvent*);
+    void tapTimeout();
+    void tapAndHoldTimeout();
+
+private:
+    QBasicTimer m_doubleTapTimer;
+    QBasicTimer m_tapAndHoldTimer;
+    OwnPtr<QTouchEvent> m_touchBeginEventForTap;
+
+    enum {
+        NoTap,
+        SingleTapStarted,
+        DoubleTapCandidate,
+        TapAndHold
+    } m_tapState;
+};
+
+} // namespace WebKit
+
+#endif /* QtTapGestureRecognizer_h */