Convert legacy 'native code' to JS-forms in dart:html

lib/html/src/dart2js_LocationWrapper.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.
 
 
 // On Firefox 11, the object obtained from 'window.location' is very strange.
 // It can't be monkey-patched and seems immune to putting methods on
 // Object.prototype.  We are forced to wrap the object.
 
 class _LocationWrapper implements LocalLocation {
@@ skipping 36 matching lines @@
 
   // String protocol;
   String get protocol => _get(_ptr, 'protocol');
   void set protocol(String value) => _set(_ptr, 'protocol', value);
 
   // String search;
   String get search => _get(_ptr, 'search');
   void set search(String value) => _set(_ptr, 'search', value);
 
 
-  void assign(String url) => _assign(_ptr, url);
+  void assign(String url) => JS('void', '#.assign(#)', _ptr, url);
 
-  void reload() => _reload(_ptr);
+  void reload() => JS('void', '#.reload()', _ptr);
 
-  void replace(String url) => _replace(_ptr, url);
+  void replace(String url) => JS('void', '#.replace(#)', _ptr, url);
 
-  String toString() => _toString(_ptr);
+  String toString() => JS('String', '#.toString()', _ptr);
 
 
-  static _get(p, m) native 'return p[m];';
-  static _set(p, m, v) native 'p[m] = v;';
-
-  static _assign(p, url) native 'p.assign(url);';
-  static _reload(p) native 'p.reload()';
-  static _replace(p, url) native 'p.replace(url);';
-  static _toString(p) native 'return p.toString();';
+  static _get(p, m) => JS('var', '#[#]', p, m);
+  static _set(p, m, v) => JS('void', '#[#] = #', p, m, v);
 }