Fix for bug 14923

tools/dom/templates/html/impl/impl_AudioContext.darttemplate

 // 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.
 
 part of web_audio;
 
 $(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 $!MEMBERS
 $if DART2JS
   factory AudioContext() => JS('AudioContext',
@@ skipping 16 matching lines @@
           bufferSize, numberOfInputChannels, numberOfOutputChannels);
     } else if (numberOfInputChannels != null) {
       return JS('ScriptProcessorNode', '#.call(#, #, #)', function, this,
           bufferSize, numberOfInputChannels);
     } else {
       return JS('ScriptProcessorNode', '#.call(#, #)', function, this,
           bufferSize);
     }
   }
 $endif
+  @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;
+  }
 }