Fix CanvasPixelArray's operator[] for the wrapping js dom

client/dom/generated/src/wrapping/_MediaListWrappingImplementation.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.
 
 class _MediaListWrappingImplementation extends DOMWrapperBase implements MediaList {
   _MediaListWrappingImplementation() : super() {}
 
   static create__MediaListWrappingImplementation() native {
     return new _MediaListWrappingImplementation();
   }
 
   int get length() { return _get_length(this); }
   static int _get_length(var _this) native;
 
   String get mediaText() { return _get_mediaText(this); }
   static String _get_mediaText(var _this) native;
 
   void set mediaText(String value) { _set_mediaText(this, value); }
   static void _set_mediaText(var _this, String value) native;
 
-  String operator[](int index) {
-    return item(index);
-  }
+  String operator[](int index) { return _index(this, index); }
+  static String _index(var _this, int index) native;
 
   void operator[]=(int index, String value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
 
   void add(String value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
   void addLast(String value) {
@@ skipping 85 matching lines @@
   }
   static void _deleteMedium(receiver, oldMedium) native;
 
   String item(int index) {
     return _item(this, index);
   }
   static String _item(receiver, index) native;
 
   String get typeName() { return "MediaList"; }
 }