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diff --git a/chromium/third_party/WebKit/Source/platform/mediastream/MediaStreamWebAudioSource.h b/chromium/third_party/WebKit/Source/platform/mediastream/MediaStreamWebAudioSource.h
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+/*
+ * Copyright 2014 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 Ericsson 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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 MediaStreamWebAudioSource_h
+#define MediaStreamWebAudioSource_h
+
+#include "platform/audio/AudioSourceProvider.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
+#include "wtf/ThreadingPrimitives.h"
+
+namespace blink {
+class WebAudioSourceProvider;
+}
+
+namespace WebCore {
+
+class MediaStreamWebAudioSource : public AudioSourceProvider {
+    WTF_MAKE_NONCOPYABLE(MediaStreamWebAudioSource);
+public:
+    static PassOwnPtr<MediaStreamWebAudioSource> create(PassOwnPtr<blink::WebAudioSourceProvider> provider) { return adoptPtr(new MediaStreamWebAudioSource(provider)); }
+
+    virtual ~MediaStreamWebAudioSource();
+
+private:
+    explicit MediaStreamWebAudioSource(PassOwnPtr<blink::WebAudioSourceProvider>);
+
+    // WebCore::AudioSourceProvider implementation.
+    virtual void provideInput(WebCore::AudioBus*, size_t framesToProcess) OVERRIDE;
+
+    OwnPtr<blink::WebAudioSourceProvider> m_webAudioSourceProvider;
+};
+
+} // namespace WebCore
+
+#endif // MediaStreamWebAudioSource_h