Enable cross frame window operations

lib/dom/templates/html/frog/impl_Window.darttemplate

 // Copyright (c) 2012, 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.
 
 class $CLASSNAME$EXTENDS$IMPLEMENTS native "@*DOMWindow" {
 
   _DocumentImpl get document() native "return this.document;";
 
   Window get _top() native "return this.top;";
 
   // Override top to return secure wrapper.
   Window get top() => _DOMWindowCrossFrameImpl._createSafe(_top);
 
+  Window _open2(url, name) native "return this.open(url, name);";
+
+  Window _open3(url, name, options) native "return this.open(url, name, options);";

[sra1, 2012/06/21 16:18:01]

For consistency, put the main API (open) first and these helpers immediately
following.

+
+  Window open(String url, String name, [String options]) {
+    if (options == null) {
+      return _DOMWindowCrossFrameImpl._createSafe(_open2(url, name));
+    } else {
+      return _DOMWindowCrossFrameImpl._createSafe(_open3(url, name, options));
+    }
+  }
 
   // API level getter and setter for Location.
   // TODO: The cross domain safe wrapper can be inserted here or folded into
   // _LocationWrapper.
   Location get location() => _get_location();
 
   // TODO: consider forcing users to do: window.location.assign('string').
   /**
    * Sets the window's location, which causes the browser to navigate to the new
    * location. [value] may be a Location object or a string.
@@ skipping 78 matching lines @@
 ''';
 
 
   _IDBFactoryImpl get indexedDB() => _get_indexedDB();
 
   _IDBFactoryImpl _get_indexedDB() native
       'return this.indexedDB || this.webkitIndexedDB || this.mozIndexedDB';
 
 $!MEMBERS
 }