Add a basic custom painting facility to Sky

sky/engine/bindings/scripts/dart_types.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 700 matching lines @@
     'unrestricted double': 'DartConverter<double>::ToDart({cpp_value})',
     # FIXME(vsm): Dart_Null?
     'void': '',
     # Special cases
     'EventHandler': '-----OOPS TO DART-EVENT---',
     # We need to generate the NullCheck version in some cases.
     'ScriptPromise': 'DartUtilities::scriptPromiseToDart({cpp_value})',
     'DartValue': 'DartConverter<DartValue*>::ToDart({cpp_value})',
     # General
     'array': 'VectorToDart({cpp_value})',
-    'DOMWrapper': 'Dart{idl_type}::toDart({cpp_value})',
+    'DOMWrapper': 'DartConverter<{idl_type}*>::ToDart({cpp_value})',
 }
 
 
 def cpp_value_to_dart_value(idl_type, cpp_value, creation_context='', extended_attributes=None):
     """Returns an expression that converts a C++ value to a Dart value."""
     # the isolate parameter is needed for callback interfaces
     idl_type, cpp_value = preprocess_idl_type_and_value(idl_type, cpp_value, extended_attributes)
     this_dart_conversion_type = idl_type.dart_conversion_type(extended_attributes)
     format_string = CPP_VALUE_TO_DART_VALUE[this_dart_conversion_type]
     statement = format_string.format(cpp_value=cpp_value, idl_type=idl_type.base_type)
@@ skipping 121 matching lines @@
         # This logic is in cpp_types in v8_types.py, since they handle
         # this using the V8StringResource type.  We handle it here
         if (extended_attributes.get('TreatNullAs') == 'EmptyString' or
             extended_attributes.get('TreatUndefinedAs') == 'EmptyString'):
             return True
 
         if extended_attributes.get('Default') == 'EmptyString':
             return True
 
     return False