Revert removal of AudioBufferCallback

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

Index: third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
diff --git a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
index 56c227762efaf41049b37228cc2d8e4c3887f0ac..492e4964b58f345ed9725a698571f7856aa276e9 100644
--- a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
+++ b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
@@ -51,6 +51,7 @@ namespace blink {
 
 class AnalyserNode;
 class AudioBuffer;
+class AudioBufferCallback;
 class AudioBufferSourceNode;
 class AudioContextOptions;
 class AudioListener;
@@ -61,8 +62,6 @@ class ChannelSplitterNode;
 class ConstantSourceNode;
 class ConvolverNode;
 class DelayNode;
-class DecodeErrorCallback;
-class DecodeSuccessCallback;
 class Document;
 class DynamicsCompressorNode;
 class ExceptionState;
@@ -170,25 +169,16 @@ class MODULES_EXPORT BaseAudioContext
   // Asynchronous audio file data decoding.
   ScriptPromise decodeAudioData(ScriptState*,
                                 DOMArrayBuffer* audio_data,
-                                DecodeSuccessCallback*,
-                                DecodeErrorCallback*,
-                                ExceptionState&);
-
-  ScriptPromise decodeAudioData(ScriptState*,
-                                DOMArrayBuffer* audio_data,
-                                ExceptionState&);
-
-  ScriptPromise decodeAudioData(ScriptState*,
-                                DOMArrayBuffer* audio_data,
-                                DecodeSuccessCallback*,
+                                AudioBufferCallback* success_callback,
+                                AudioBufferCallback* error_callback,
                                 ExceptionState&);
 
   // Handles the promise and callbacks when |decodeAudioData| is finished
   // decoding.
   void HandleDecodeAudioData(AudioBuffer*,
                              ScriptPromiseResolver*,
-                             DecodeSuccessCallback*,
-                             DecodeErrorCallback*);
+                             AudioBufferCallback* success_callback,
+                             AudioBufferCallback* error_callback);
 
   AudioListener* listener() { return listener_; }