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

third_party/WebKit/Source/bindings/scripts/v8_methods.py

Index: third_party/WebKit/Source/bindings/scripts/v8_methods.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_methods.py b/third_party/WebKit/Source/bindings/scripts/v8_methods.py
index f741c9e6be64ff77cc892ef8f1b00a2a92eab312..626c26679a3190795300568c7b2e2c16c0ae52d7 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_methods.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_methods.py
@@ -285,16 +285,6 @@ def argument_declarations_for_private_script(interface, method):
 ################################################################################
 
 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 = []
@@ -315,7 +305,7 @@ def cpp_value(interface, method, number_of_arguments):
             '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':
@@ -356,7 +346,6 @@ def v8_set_return_value(interface_name, method, cpp_value, for_main_world=False)
             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:
@@ -364,10 +353,9 @@ def v8_set_return_value(interface_name, method, cpp_value, for_main_world=False)
             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):