Generate EventListener attributes of non-EventTarget classes.

client/dom/generated/src/interface/AudioContext.dart

 // Copyright (c) 2011, 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.
 
 interface AudioContext factory _AudioContextFactoryProvider {
 
   AudioContext();
 
   num get currentTime();
 
   AudioDestinationNode get destination();
 
   AudioListener get listener();
 
+  EventListener get oncomplete();
+
+  void set oncomplete(EventListener value);
+
   num get sampleRate();
 
   RealtimeAnalyserNode createAnalyser();
 
   BiquadFilterNode createBiquadFilter();
 
   AudioBuffer createBuffer();
 
   AudioBufferSourceNode createBufferSource();
 
@@ skipping 18 matching lines @@
   MediaElementAudioSourceNode createMediaElementSource(HTMLMediaElement mediaElement);
 
   AudioPannerNode createPanner();
 
   WaveShaperNode createWaveShaper();
 
   void decodeAudioData(ArrayBuffer audioData, AudioBufferCallback successCallback, [AudioBufferCallback errorCallback]);
 
   void startRendering();
 }