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

third_party/WebKit/Source/bindings/scripts/v8_utilities.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 167 matching lines @@
     if ('PerWorldBindings' not in extended_attributes and
             'LogAllWorlds' not in extended_attributes):
         return True
     return False
 
 
 # [CallWith]
 CALL_WITH_ARGUMENTS = {
     'ScriptState': 'scriptState',
     'ExecutionContext': 'executionContext',
-    'ScriptArguments': 'scriptArguments.release()',
+    'ScriptArguments': 'scriptArguments',
     'CurrentWindow': 'currentDOMWindow(info.GetIsolate())',
     'EnteredWindow': 'enteredDOMWindow(info.GetIsolate())',
     'Document': 'document',
     'ThisValue': 'ScriptValue(scriptState, info.This())',
 }
 # List because key order matters, as we want arguments in deterministic order
 CALL_WITH_VALUES = [
     'ScriptState',
     'ExecutionContext',
     'ScriptArguments',
@@ skipping 118 matching lines @@
         if e.exposed not in EXPOSED_EXECUTION_CONTEXT_METHOD:
             raise ValueError('Invalid execution context: %s' % e.exposed)
 
     # Methods must not be exposed to a broader scope than their interface.
     if not exposure_set.issubset(interface_exposure_set):
         raise ValueError('Interface members\' exposure sets must be a subset of the interface\'s.')
 
     return exposure_set.code()
 
 
-# [GarbageCollected]
-def gc_type(definition):
-    extended_attributes = definition.extended_attributes
-    if 'GarbageCollected' in extended_attributes:
-        return 'GarbageCollectedObject'
-    return 'RefCountedObject'
-
-
 # [ImplementedAs]
 def cpp_name(definition_or_member):
     extended_attributes = definition_or_member.extended_attributes
     if 'ImplementedAs' not in extended_attributes:
         return definition_or_member.name
     return extended_attributes['ImplementedAs']
 
 
 def cpp_name_from_interfaces_info(name, interfaces_info):
     return interfaces_info.get(name, {}).get('implemented_as') or name
@@ skipping 264 matching lines @@
     except StopIteration:
         return None
 
 
 IdlInterface.indexed_property_getter = property(indexed_property_getter)
 IdlInterface.indexed_property_setter = property(indexed_property_setter)
 IdlInterface.indexed_property_deleter = property(indexed_property_deleter)
 IdlInterface.named_property_getter = property(named_property_getter)
 IdlInterface.named_property_setter = property(named_property_setter)
 IdlInterface.named_property_deleter = property(named_property_deleter)