Wrap Location object on Firefox.

lib/html/src/frog_LocationWrapper.dart

Index: lib/html/src/frog_LocationWrapper.dart
diff --git a/lib/html/src/frog_LocationWrapper.dart b/lib/html/src/frog_LocationWrapper.dart
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+// 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 Location {
+
+  final _ptr;  // Opaque reference to real location.
+
+  _LocationWrapper(this._ptr);
+
+  // TODO(sra): Replace all the _set and _get calls with 'JS' forms.
+
+  // final List<String> ancestorOrigins;
+  List<String> get ancestorOrigins() => _get(_ptr, 'ancestorOrigins');
+
+  // String hash;
+  String get hash() => _get(_ptr, 'hash');
+  void set hash(String value) => _set(_ptr, 'hash', value);
+
+  // String host;
+  String get host() => _get(_ptr, 'host');
+  void set host(String value) => _set(_ptr, 'host', value);
+
+  // String hostname;
+  String get hostname() => _get(_ptr, 'hostname');
+  void set hostname(String value) => _set(_ptr, 'hostname', value);
+
+  // String href;
+  String get href() => _get(_ptr, 'href');
+  void set href(String value) => _set(_ptr, 'href', value);
+
+  // final String origin;
+  String get origin() => _get(_ptr, 'origin');
+
+  // String pathname;
+  String get pathname() => _get(_ptr, 'pathname');
+  void set pathname(String value) => _set(_ptr, 'pathname', value);
+
+  // String port;
+  String get port() => _get(_ptr, 'port');
+  void set port(String value) => _set(_ptr, 'port', value);
+
+  // 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 reload() => _reload(_ptr);
+
+  void replace(String url) => _replace(_ptr, url);
+
+  String toString() => _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();';
+}