Fix for bug 14923

sdk/lib/web_audio/dartium/web_audio_dartium.dart

 library dart.dom.web_audio;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:_internal' hide deprecated;
 import 'dart:html';
 import 'dart:html_common';
 import 'dart:nativewrappers';
 import 'dart:typed_data';
 // DO NOT EDIT
@@ skipping 461 matching lines @@
   ScriptProcessorNode _createScriptProcessor_4() native "AudioContext__createScriptProcessor_4_Callback";
 
   @DomName('AudioContext.createWaveShaper')
   @DocsEditable()
   WaveShaperNode createWaveShaper() native "AudioContext_createWaveShaper_Callback";
 
   @DomName('AudioContext.decodeAudioData')
   @DocsEditable()
   void _decodeAudioData(ByteBuffer audioData, AudioBufferCallback successCallback, [AudioBufferCallback errorCallback]) native "AudioContext_decodeAudioData_Callback";
 
-  Future<AudioBuffer> decodeAudioData(ByteBuffer audioData) {
-    var completer = new Completer<AudioBuffer>();
-    _decodeAudioData(audioData,
-        (value) { completer.complete(value); },
-        (error) { completer.completeError(error); });
-    return completer.future;
-  }
-
   @DomName('AudioContext.startRendering')
   @DocsEditable()
   void startRendering() native "AudioContext_startRendering_Callback";
 
   @DomName('AudioContext.addEventListener')
   @DocsEditable()
   @Experimental() // untriaged
   void addEventListener(String type, EventListener listener, [bool useCapture]) native "AudioContext_addEventListener_Callback";
 
   @DomName('AudioContext.dispatchEvent')
   @DocsEditable()
   @Experimental() // untriaged
   bool dispatchEvent(Event event) native "AudioContext_dispatchEvent_Callback";
 
   @DomName('AudioContext.removeEventListener')
   @DocsEditable()
   @Experimental() // untriaged
   void removeEventListener(String type, EventListener listener, [bool useCapture]) native "AudioContext_removeEventListener_Callback";
 
   /// Stream of `complete` events handled by this [AudioContext].
   @DomName('AudioContext.oncomplete')
   @DocsEditable()
   Stream<Event> get onComplete => completeEvent.forTarget(this);
 
+  @DomName('AudioContext.decodeAudioData')
+  Future<AudioBuffer> decodeAudioData(ByteBuffer audioData) {
+    var completer = new Completer<AudioBuffer>();
+    _decodeAudioData(audioData,
+        (value) { completer.complete(value); },
+        (error) {
+          if (error == null) {
+            completer.completeError('');
+          } else {
+            completer.completeError(error);
+          }
+        });
+    return completer.future;
+  }
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // WARNING: Do not edit - generated code.
 
 
 @DocsEditable()
 @DomName('AudioDestinationNode')
@@ skipping 867 matching lines @@
 
   @DomName('WaveShaperNode.oversample')
   @DocsEditable()
   String get oversample native "WaveShaperNode_oversample_Getter";
 
   @DomName('WaveShaperNode.oversample')
   @DocsEditable()
   void set oversample(String value) native "WaveShaperNode_oversample_Setter";
 
 }