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

client/dom/generated/src/wrapping/_HTMLCollectionWrappingImplementation.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 _HTMLCollectionWrappingImplementation extends DOMWrapperBase implements HTMLCollection {
   _HTMLCollectionWrappingImplementation() : super() {}
 
   static create__HTMLCollectionWrappingImplementation() native {
     return new _HTMLCollectionWrappingImplementation();
   }
 
   int get length() { return _get_length(this); }
   static int _get_length(var _this) native;
 
-  Node operator[](int index) {
-    return item(index);
-  }
+  Node operator[](int index) { return _index(this, index); }
+  static Node _index(var _this, int index) native;
 
   void operator[]=(int index, Node value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
 
   void add(Node value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
   void addLast(Node value) {
@@ skipping 78 matching lines @@
   }
   static Node _item(receiver, index) native;
 
   Node namedItem(String name) {
     return _namedItem(this, name);
   }
   static Node _namedItem(receiver, name) native;
 
   String get typeName() { return "HTMLCollection"; }
 }