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diff --git a/WebCore/webaudio/DelayDSPKernel.h b/WebCore/webaudio/DelayDSPKernel.h
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+/*
+ * Copyright (C) 2010, 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 DelayDSPKernel_h
+#define DelayDSPKernel_h
+
+#include "AudioArray.h"
+#include "AudioDSPKernel.h"
+#include "DelayProcessor.h"
+
+namespace WebCore {
+
+class DelayProcessor;
+    
+class DelayDSPKernel : public AudioDSPKernel {
+public:  
+    DelayDSPKernel(DelayProcessor*);
+    DelayDSPKernel(double maxDelayTime, double sampleRate);
+    
+    virtual void process(const float* source, float* destination, size_t framesToProcess);
+    virtual void reset();
+    
+    double maxDelayTime() const { return m_maxDelayTime; }
+    
+    void setDelayFrames(double numberOfFrames) { m_desiredDelayFrames = numberOfFrames; }
+    
+private:
+    AudioFloatArray m_buffer;
+    double m_maxDelayTime;
+    int m_writeIndex;
+    double m_currentDelayTime;
+    double m_smoothingRate;
+    bool m_firstTime;
+    double m_desiredDelayFrames;
+
+    DelayProcessor* delayProcessor() { return static_cast<DelayProcessor*>(processor()); }
+};
+
+} // namespace WebCore
+
+#endif // DelayDSPKernel_h