Removing deprecated events syntax.

sdk/lib/web_audio/dartium/web_audio_dartium.dart

 library dart.dom.web_audio;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
 import 'dart:html_common';
 import 'dart:nativewrappers';
 // DO NOT EDIT
 // Auto-generated dart:audio library.
 
@@ skipping 217 matching lines @@
   AudioContext.internal() : super.internal();
 
   @DomName('AudioContext.completeEvent')
   @DocsEditable
   static const EventStreamProvider<Event> completeEvent = const EventStreamProvider<Event>('complete');
   factory AudioContext() => _create();
 
   @DocsEditable
   static AudioContext _create() native "AudioContext_constructorCallback";
 
-  @DocsEditable
-  @DomName('EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent')
-  @deprecated
-  AudioContextEvents get on =>
-    new AudioContextEvents(this);
-
   @DomName('AudioContext.activeSourceCount')
   @DocsEditable
   int get activeSourceCount native "AudioContext_activeSourceCount_Getter";
 
   @DomName('AudioContext.currentTime')
   @DocsEditable
   num get currentTime native "AudioContext_currentTime_Getter";
 
   @DomName('AudioContext.destination')
   @DocsEditable
@@ skipping 150 matching lines @@
 
   @DomName('AudioContext.startRendering')
   @DocsEditable
   void startRendering() native "AudioContext_startRendering_Callback";
 
   @DomName('AudioContext.oncomplete')
   @DocsEditable
   Stream<Event> get onComplete => completeEvent.forTarget(this);
 
 }
-
-@DocsEditable
-@deprecated
-class AudioContextEvents extends Events {
-  @DocsEditable
-  AudioContextEvents(EventTarget _ptr) : super(_ptr);
-
-  @DocsEditable
-  EventListenerList get complete => this['complete'];
-}
 // 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')
 class AudioDestinationNode extends AudioNode {
@@ skipping 687 matching lines @@
 
 // WARNING: Do not edit - generated code.
 
 
 @DocsEditable
 @DomName('WaveTable')
 class WaveTable extends NativeFieldWrapperClass1 {
   WaveTable.internal();
 
 }