[Origin Trials] Allow static attributes to be defined on origin trials

third_party/WebKit/Source/bindings/scripts/v8_attributes.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 164 matching lines @@
             else ['']),  # [PerWorldBindings]
     }
 
     if is_constructor_attribute(attribute):
         update_constructor_attribute_context(interface, attribute, context)
     if not has_custom_getter(attribute):
         getter_context(interface, attribute, context)
     if not has_custom_setter(attribute) and has_setter(interface, attribute):
         setter_context(interface, attribute, context)
 
-    # [OriginTrialEnabled]
-    # TODO(iclelland): Allow origin trials on static interfaces
-    # (crbug.com/614352)
-    if context['origin_trial_feature_name'] and context['on_interface']:
-        raise Exception('[OriginTrialEnabled] cannot be specified on static '
-                        'attributes: %s.%s' % (interface.name, attribute.name))
-
     return context
 
 
 def filter_has_accessor_configuration(attributes):
     return [attribute for attribute in attributes if
             not (attribute['exposed_test'] or
                  attribute['origin_trial_enabled_function'] or
                  attribute['runtime_enabled_function']) and
             not attribute['is_data_type_property'] and
             attribute['should_be_exposed_to_script']]
@@ skipping 369 matching lines @@
     lambda self: strip_suffix(self.base_type, 'Constructor'))
 
 
 def is_constructor_attribute(attribute):
     # FIXME: replace this with [ConstructorAttribute] extended attribute
     return attribute.idl_type.name.endswith('Constructor')
 
 
 def update_constructor_attribute_context(interface, attribute, context):
     context['needs_constructor_getter_callback'] = context['measure_as'] or context['deprecate_as']