Have bindings layer assume and insist that all interface types are GCed.

third_party/WebKit/Source/bindings/scripts/v8_methods.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 267 matching lines @@
     if method.idl_type.name != 'void':
         argument_declarations.append('%s* %s' % (method.idl_type.cpp_type, 'result'))
     return argument_declarations
 
 
 ################################################################################
 # Value handling
 ################################################################################
 
 def cpp_value(interface, method, number_of_arguments):
-    def cpp_argument(argument):
-        idl_type = argument.idl_type
-        if idl_type.name == 'EventListener':
-            return argument.name
-        if (idl_type.name in ['NodeFilter', 'NodeFilterOrNull',
-                              'XPathNSResolver', 'XPathNSResolverOrNull']):
-            # FIXME: remove this special case
-            return '%s.release()' % argument.name
-        return argument.name
-
     # Truncate omitted optional arguments
     arguments = method.arguments[:number_of_arguments]
     cpp_arguments = []
     if 'ImplementedInPrivateScript' in method.extended_attributes:
         cpp_arguments.append('toLocalFrame(toFrameIfNotDetached(info.GetIsolate()->GetCurrentContext()))')
         cpp_arguments.append('impl')
 
     if method.is_constructor:
         call_with_values = interface.extended_attributes.get('ConstructorCallWith')
     else:
         call_with_values = method.extended_attributes.get('CallWith')
     cpp_arguments.extend(v8_utilities.call_with_arguments(call_with_values))
 
     # Members of IDL partial interface definitions are implemented in C++ as
     # static member functions, which for instance members (non-static members)
     # take *impl as their first argument
     if ('PartialInterfaceImplementedAs' in method.extended_attributes and
             'ImplementedInPrivateScript' not in method.extended_attributes and
             not method.is_static):
         cpp_arguments.append('*impl')
-    cpp_arguments.extend(cpp_argument(argument) for argument in arguments)
+    cpp_arguments.extend(argument.name for argument in arguments)
 
     if 'ImplementedInPrivateScript' in method.extended_attributes:
         if method.idl_type.name != 'void':
             cpp_arguments.append('&result')
     elif ('RaisesException' in method.extended_attributes or
           (method.is_constructor and
            has_extended_attribute_value(interface, 'RaisesException', 'Constructor'))):
         cpp_arguments.append('exceptionState')
 
     # If a method returns an IDL dictionary or union type, the return value is
@@ skipping 20 matching lines @@
     extended_attributes = method.extended_attributes
     if not idl_type or idl_type.name == 'void':
         # Constructors and void methods don't have a return type
         return None
 
     if ('ImplementedInPrivateScript' in extended_attributes and
             not idl_type.is_wrapper_type and
             not idl_type.is_basic_type):
         raise Exception('Private scripts supports only primitive types and DOM wrappers.')
 
-    release = False
     # [CallWith=ScriptState], [RaisesException]
     if use_local_result(method):
         if idl_type.is_explicit_nullable:
             # result is of type Nullable<T>
             cpp_value = 'result.get()'
         else:
             cpp_value = 'result'
-        release = idl_type.release
 
     script_wrappable = 'impl' if inherits_interface(interface_name, 'Node') else ''
-    return idl_type.v8_set_return_value(cpp_value, extended_attributes, script_wrappable=script_wrappable, release=release, for_main_world=for_main_world, is_static=method.is_static)
+    return idl_type.v8_set_return_value(cpp_value, extended_attributes, script_wrappable=script_wrappable, for_main_world=for_main_world, is_static=method.is_static)
 
 
 def v8_value_to_local_cpp_variadic_value(method, argument, index, return_promise):
     assert argument.is_variadic
     idl_type = argument.idl_type
     this_cpp_type = idl_type.cpp_type
 
     if method.returns_promise:
         check_expression = 'exceptionState.hadException()'
     else:
@@ skipping 90 matching lines @@
     return method.idl_type and method.idl_type.name == 'Promise'
 
 IdlOperation.returns_promise = property(method_returns_promise)
 
 
 def argument_conversion_needs_exception_state(method, argument):
     idl_type = argument.idl_type
     return (idl_type.v8_conversion_needs_exception_state or
             argument.is_variadic or
             (method.returns_promise and idl_type.is_string_type))