Remove AudioBufferCallback

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

Index: third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
diff --git a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
index d8d4d6d9eebafe048099e3035c94c5887b8aebad..f058169adc66a5f693c46af7e3f33388ccdb57d6 100644
--- a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
+++ b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
@@ -3,12 +3,16 @@
 // found in the LICENSE file.
 
 // See https://webaudio.github.io/web-audio-api/#BaseAudioContext
+
 enum AudioContextState {
     "suspended",
     "running",
     "closed"
 };
 
+callback DecodeErrorCallback = void (DOMException error);
+callback DecodeSuccessCallback = void (AudioBuffer decodedData);
+
 [
     ActiveScriptWrappable,
     DependentLifetime,
@@ -31,7 +35,7 @@ enum AudioContextState {
     [RaisesException] AudioBuffer createBuffer(unsigned long numberOfChannels, unsigned long numberOfFrames, float sampleRate);
 
     // Asynchronous audio file data decoding.
-    [RaisesException, MeasureAs=AudioContextDecodeAudioData, CallWith=ScriptState] Promise<AudioBuffer> decodeAudioData(ArrayBuffer audioData, optional AudioBufferCallback successCallback, optional AudioBufferCallback errorCallback);
+    [RaisesException, MeasureAs=AudioContextDecodeAudioData, CallWith=ScriptState] Promise<AudioBuffer> decodeAudioData(ArrayBuffer audioData, optional DecodeSuccessCallback successCallback, optional DecodeErrorCallback  errorCallback);
 
     // Sources
     [RaisesException, MeasureAs=AudioContextCreateBufferSource] AudioBufferSourceNode createBufferSource();