Revert "Workaround #537"

tool/input_sdk/lib/js/dart2js/js_dart2js.dart

 // Copyright (c) 2015, 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.
 
 /**
  * Support for interoperating with JavaScript.
  *
  * This library provides access to JavaScript objects from Dart, allowing
  * Dart code to get and set properties, and call methods of JavaScript objects
  * and invoke JavaScript functions. The library takes care of converting
@@ skipping 299 matching lines @@
       args == null ? null : new List.from(args.map(_convertToJS))));
 }
 
 // TODO(jmesserly): this is totally unnecessary in dev_compiler.
 /** A [List] that proxies a JavaScript array. */
 class JsArray<E> extends JsObject with ListMixin<E> {
 
   /**
    * Creates a new JavaScript array.
    */
-  // TODO(vsm): Making this a factory to workaround #537.
-  factory JsArray() { return new JsArray._fromJs([]); }
+  JsArray() : super._fromJs([]);
 
   /**
    * Creates a new JavaScript array and initializes it to the contents of
    * [other].
    */
   JsArray.from(Iterable<E> other)
       : super._fromJs([]..addAll(other.map(_convertToJS)));
 
   JsArray._fromJs(jsObject) : super._fromJs(jsObject);
 
@@ skipping 219 matching lines @@
         '  for (let arg of arguments) {'
         '    args.push(arg);'
         '  }'
         '  return #(...args);'
         '}',
         f);
     _interopCaptureThisExpando[f] = ret;
   }
   return ret;
 }