Work-around Frog codegen bug where Window is derived from native DOMWindow.

client/dom/scripts/dartgenerator.py

 #!/usr/bin/python
 # 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.
 
 """This module generates Dart APIs from the IDL database."""
 
 import emitter
 import idlnode
 import logging
@@ skipping 103 matching lines @@
 # Custom getters that must be implemented by hand.
 #
 _custom_getters = set([
     ('DOMWindow', 'localStorage'),
     ])
 
 #
 # Custom native specs for the Frog dom.
 #
 _frog_dom_custom_native_specs = {
-    'Console': '=console',      # Decorate the singleton Console object.
-    'DOMWindow': '@*DOMWindow', # DOMWindow aliased with global scope.
+    # Decorate the singleton Console object, if present (workers do not have a
+    # console).
+    'Console': "=(typeof console == 'undefined' ? {} : console)",
 
-    # Temporary hack: make these not be 'hidden'.  Will not work on IE9.
+    # DOMWindow aliased with global scope.
+    'DOMWindow': '@*DOMWindow',
+
+    # Temporary hack: make these not be 'hidden', so that static methods can be
+    # put on them.  Frog should be fixed to generate working code for static
+    # methods on hidden classes.  Meantime, programs will not work on IE9.
     'Float32Array': 'Float32Array',
     'Float64Array': 'Float64Array',
     'Int8Array': 'Int8Array',
     'Int16Array': 'Int16Array',
     'Int32Array': 'Int32Array',
     'Uint8Array': 'Uint8Array',
     'Uint16Array': 'Uint16Array',
     'Uint32Array': 'Uint32Array',
 }
 
@@ skipping 2349 matching lines @@
     Arguments:
       info: An OperationInfo object.
     """
     # TODO(vsm): Handle overloads.
     self._members_emitter.Emit(
         '\n'
         '  $TYPE $NAME($ARGS) native;\n',
         TYPE=info.type_name,
         NAME=info.name,
         ARGS=info.arg_implementation_declaration)