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

third_party/WebKit/Source/bindings/scripts/v8_interface.py

Index: third_party/WebKit/Source/bindings/scripts/v8_interface.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_interface.py b/third_party/WebKit/Source/bindings/scripts/v8_interface.py
index c0a07f63af64a148fa0bf0c0f09fbd5f31b71c20..bcfa35cc13b2e57c6c8be4891e61e12f976a0751 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_interface.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_interface.py
@@ -46,7 +46,7 @@ import v8_methods
 import v8_types
 from v8_types import cpp_ptr_type, cpp_template_type
 import v8_utilities
-from v8_utilities import (cpp_name_or_partial, capitalize, cpp_name, gc_type,
+from v8_utilities import (cpp_name_or_partial, capitalize, cpp_name,
                           has_extended_attribute_value, runtime_enabled_function_name,
                           extended_attribute_value_as_list, is_legacy_interface_type_checking)
 
@@ -150,8 +150,6 @@ def interface_context(interface):
         has_extended_attribute_value(interface, 'Custom', 'VisitDOMWrapper') or
         set_wrapper_reference_from or set_wrapper_reference_to)
 
-    this_gc_type = gc_type(interface)
-
     wrapper_class_id = ('NodeClassId' if inherits_interface(interface.name, 'Node') else 'ObjectClassId')
 
     v8_class_name = v8_utilities.v8_class_name(interface)
@@ -163,7 +161,7 @@ def interface_context(interface):
         'cpp_class': cpp_class_name,
         'cpp_class_or_partial': cpp_class_name_or_partial,
         'event_target_inheritance': 'InheritFromEventTarget' if is_event_target else 'NotInheritFromEventTarget',
-        'gc_type': this_gc_type,
+        'is_gc_type': True,
         # FIXME: Remove 'EventTarget' special handling, http://crbug.com/383699
         'has_access_check_callbacks': (is_check_security and
                                        interface.name != 'Window' and
@@ -185,9 +183,7 @@ def interface_context(interface):
         'measure_as': v8_utilities.measure_as(interface, None),  # [MeasureAs]
         'origin_trial_enabled_function': v8_utilities.origin_trial_enabled_function_name(interface, None),
         'parent_interface': parent_interface,
-        'pass_cpp_type': cpp_template_type(
-            cpp_ptr_type('PassRefPtr', 'RawPtr', this_gc_type),
-            cpp_name(interface)),
+        'pass_cpp_type': cpp_name(interface) + '*',
         'active_scriptwrappable': active_scriptwrappable,
         'runtime_enabled_function': runtime_enabled_function_name(interface),  # [RuntimeEnabled]
         'set_wrapper_reference_from': set_wrapper_reference_from,
@@ -1224,9 +1220,7 @@ def constructor_context(interface, constructor):
 
     return {
         'arguments': argument_contexts,
-        'cpp_type': cpp_template_type(
-            cpp_ptr_type('RefPtr', 'RawPtr', gc_type(interface)),
-            cpp_name(interface)),
+        'cpp_type': cpp_name(interface) + '*',
         'cpp_value': v8_methods.cpp_value(
             interface, constructor, len(constructor.arguments)),
         'has_exception_state':
@@ -1345,7 +1339,7 @@ def property_getter(getter, cpp_arguments):
         'is_raises_exception': is_raises_exception,
         'name': cpp_name(getter),
         'use_output_parameter_for_result': use_output_parameter_for_result,
-        'v8_set_return_value': idl_type.v8_set_return_value('result', extended_attributes=extended_attributes, script_wrappable='impl', release=idl_type.release),
+        'v8_set_return_value': idl_type.v8_set_return_value('result', extended_attributes=extended_attributes, script_wrappable='impl'),
     }