Make ScriptProcessorNode not a proper event (because it isn't). This fixes the last of the static a…

sdk/lib/web_audio/dartium/web_audio_dartium.dart

Index: sdk/lib/web_audio/dartium/web_audio_dartium.dart
diff --git a/sdk/lib/web_audio/dartium/web_audio_dartium.dart b/sdk/lib/web_audio/dartium/web_audio_dartium.dart
index ee711d3d553a3e6a89a62a8155e890a40352a3ca..a2aac5b4407fc6775f13d4c5f9d7f578b1a59979 100644
--- a/sdk/lib/web_audio/dartium/web_audio_dartium.dart
+++ b/sdk/lib/web_audio/dartium/web_audio_dartium.dart
@@ -1002,23 +1002,21 @@ class PannerNode extends AudioNode {
 
 
 /// @domName ScriptProcessorNode
-class ScriptProcessorNode extends AudioNode implements EventTarget {
+class ScriptProcessorNode extends AudioNode {
   ScriptProcessorNode.internal(): super.internal();
 
-  /// @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent; @docsEditable true
-  ScriptProcessorNodeEvents get on =>
-    new ScriptProcessorNodeEvents(this);
-
 
   /** @domName ScriptProcessorNode.bufferSize */
   int get bufferSize native "ScriptProcessorNode_bufferSize_Getter";
 
-}
 
-class ScriptProcessorNodeEvents extends Events {
-  ScriptProcessorNodeEvents(EventTarget _ptr) : super(_ptr);
+  /** @domName ScriptProcessorNode.onaudioprocess */
+  EventListener get onaudioprocess native "ScriptProcessorNode_onaudioprocess_Getter";
+
+
+  /** @domName ScriptProcessorNode.onaudioprocess */
+  void set onaudioprocess(EventListener value) native "ScriptProcessorNode_onaudioprocess_Setter";
 
-  EventListenerList get audioProcess => this['audioprocess'];
 }
 // 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