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diff --git a/WebKit/chromium/src/AudioDestinationChromium.cpp b/WebKit/chromium/src/AudioDestinationChromium.cpp
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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.
+ * 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.
+ */
+
+#include "config.h"
+
+#if ENABLE(WEB_AUDIO)
+
+#include "AudioDestinationChromium.h"
+
+#include "AudioSourceProvider.h"
+#include "WebKit.h"
+#include "WebKitClient.h"
+
+using namespace WebKit;
+
+namespace WebCore {
+
+// Buffer size that the Chromium audio system will call us back with.
+// This value may need to be tuned based on the OS.
+// FIXME: It may be possible to reduce this value once real-time threads
+// and other Chromium audio improvements are made.
+const unsigned callbackBufferSize = 2048;
+
+// Buffer size at which the web audio engine will render.
+const unsigned renderBufferSize = 128;
+
+const unsigned renderCountPerCallback = callbackBufferSize / renderBufferSize;
+
+// FIXME: add support for multi-channel.
+const unsigned numberOfChannels = 2;
+
+// Factory method: Chromium-implementation
+PassOwnPtr<AudioDestination> AudioDestination::create(AudioSourceProvider& provider, double sampleRate)
+{
+    return adoptPtr(new AudioDestinationChromium(provider, sampleRate));
+}
+
+AudioDestinationChromium::AudioDestinationChromium(AudioSourceProvider& provider, double sampleRate)
+    : m_provider(provider)
+    , m_renderBus(numberOfChannels, renderBufferSize, false)
+    , m_sampleRate(sampleRate)
+    , m_isPlaying(false)
+{
+    m_audioDevice = adoptPtr(webKitClient()->createAudioDevice(callbackBufferSize, numberOfChannels, sampleRate, this));
+    ASSERT(m_audioDevice.get());
+}
+
+AudioDestinationChromium::~AudioDestinationChromium()
+{
+    stop();
+}
+
+void AudioDestinationChromium::start()
+{
+    if (!m_isPlaying && m_audioDevice.get()) {
+        m_audioDevice->start();
+        m_isPlaying = true;
+    }
+}
+
+void AudioDestinationChromium::stop()
+{
+    if (m_isPlaying && m_audioDevice.get()) {
+        m_audioDevice->stop();
+        m_isPlaying = false;
+    }
+}
+
+double AudioDestination::hardwareSampleRate()
+{
+    // FIXME: implement this properly for Chromium.
+    return 44100.0;
+}
+
+// Pulls on our provider to get the rendered audio stream.
+void AudioDestinationChromium::render(const WebVector<float*>& audioData, size_t numberOfFrames)
+{
+    bool isNumberOfChannelsGood = audioData.size() == numberOfChannels;
+    if (!isNumberOfChannelsGood) {
+        ASSERT_NOT_REACHED();
+        return;
+    }
+        
+    bool isBufferSizeGood = numberOfFrames == callbackBufferSize;
+    if (!isBufferSizeGood) {
+        ASSERT_NOT_REACHED();
+        return;
+    }
+
+    // Split up the callback buffer into smaller chunks which we'll render one after the other.
+    for (unsigned i = 0; i < renderCountPerCallback; ++i) {
+        m_renderBus.setChannelMemory(0, audioData[0] + i * renderBufferSize, renderBufferSize);
+        m_renderBus.setChannelMemory(1, audioData[1] + i * renderBufferSize, renderBufferSize);
+        m_provider.provideInput(&m_renderBus, renderBufferSize);
+    }
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(WEB_AUDIO)