IDL: Support deleter operation with any return type

Source/bindings/scripts/v8_interface.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 # coding=utf-8
 #
 # 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
@@ skipping 1281 matching lines @@
         'v8_value_to_local_cpp_value': idl_type.v8_value_to_local_cpp_value(
             extended_attributes, 'v8Value', 'propertyValue', restricted_float=restricted_float),
     }
 
 
 def property_deleter(deleter):
     if not deleter:
         return None
 
     idl_type = deleter.idl_type
-    if str(idl_type) != 'boolean':
-        raise Exception(
-            'Only deleters with boolean type are allowed, but type is "%s"' %
-            idl_type)
     extended_attributes = deleter.extended_attributes
     return {
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }