Revert removal of AudioBufferCallback

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

 /*
  * 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
@@ skipping 16 matching lines @@
 #define AsyncAudioDecoder_h
 
 #include <memory>
 #include "platform/heap/Handle.h"
 #include "platform/wtf/build_config.h"
 
 namespace blink {
 
 class BaseAudioContext;
 class AudioBuffer;
+class AudioBufferCallback;
 class AudioBus;
-class DecodeErrorCallback;
-class DecodeSuccessCallback;
 class DOMArrayBuffer;
 class ScriptPromiseResolver;
 
 // AsyncAudioDecoder asynchronously decodes audio file data from a
 // DOMArrayBuffer in the background thread. Upon successful decoding, a
 // completion callback will be invoked with the decoded PCM data in an
 // AudioBuffer.
 
 class AsyncAudioDecoder {
   DISALLOW_NEW();
   WTF_MAKE_NONCOPYABLE(AsyncAudioDecoder);
 
  public:
   AsyncAudioDecoder(){};
   ~AsyncAudioDecoder(){};
 
   // Must be called on the main thread.  |decodeAsync| and callees must not
   // modify any of the parameters except |audioData|.  They are used to
   // associate this decoding instance with the caller to process the decoding
   // appropriately when finished.
   void DecodeAsync(DOMArrayBuffer* audio_data,
                    float sample_rate,
-                   DecodeSuccessCallback*,
-                   DecodeErrorCallback*,
+                   AudioBufferCallback* success_callback,
+                   AudioBufferCallback* error_callback,
                    ScriptPromiseResolver*,
                    BaseAudioContext*);
 
  private:
   AudioBuffer* CreateAudioBufferFromAudioBus(AudioBus*);
   static void DecodeOnBackgroundThread(DOMArrayBuffer* audio_data,
                                        float sample_rate,
-                                       DecodeSuccessCallback*,
-                                       DecodeErrorCallback*,
+                                       AudioBufferCallback* success_callback,
+                                       AudioBufferCallback* error_callback,
                                        ScriptPromiseResolver*,
                                        BaseAudioContext*);
   static void NotifyComplete(DOMArrayBuffer* audio_data,
-                             DecodeSuccessCallback*,
-                             DecodeErrorCallback*,
+                             AudioBufferCallback* success_callback,
+                             AudioBufferCallback* error_callback,
                              AudioBus*,
                              ScriptPromiseResolver*,
                              BaseAudioContext*);
 };
 
 }  // namespace blink
 
 #endif  // AsyncAudioDecoder_h