Revert removal of AudioBufferCallback

third_party/WebKit/Source/modules/webaudio/AudioBufferCallback.h

Index: third_party/WebKit/Source/modules/webaudio/AudioBufferCallback.h
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioBufferCallback.h b/third_party/WebKit/Source/modules/webaudio/AudioBufferCallback.h
new file mode 100644
index 0000000000000000000000000000000000000000..e8ccc98095945333ca7002465ae6256b302f114e
--- /dev/null
+++ b/third_party/WebKit/Source/modules/webaudio/AudioBufferCallback.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011, 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 AudioBufferCallback_h
+#define AudioBufferCallback_h
+
+#include "platform/heap/Handle.h"
+#include "platform/wtf/build_config.h"
+
+namespace blink {
+
+class AudioBuffer;
+class DOMException;
+
+class AudioBufferCallback
+    : public GarbageCollectedFinalized<AudioBufferCallback> {
+ public:
+  virtual ~AudioBufferCallback() {}
+  DEFINE_INLINE_VIRTUAL_TRACE() {}
+  virtual void handleEvent(AudioBuffer*) = 0;
+  virtual void handleEvent(DOMException*) = 0;
+};
+
+}  // namespace blink
+
+#endif  // AudioBufferCallback_h