[Bindings][Refactoring] Move logics of preparePrototypeAndInterfaceObject from .tmpl to .py

third_party/WebKit/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 372 matching lines @@
 
     # Conditionally enabled members
     has_conditional_attributes_on_prototype = any(  # pylint: disable=invalid-name
         (attribute['exposed_test'] or attribute['secure_context_test']) and attribute['on_prototype']
         for attribute in attributes)
     context.update({
         'has_conditional_attributes_on_prototype':
             has_conditional_attributes_on_prototype,
     })
 
+    prepare_prototype_and_interface_object_func = None  # pylint: disable=invalid-name
+    if (unscopables or has_conditional_attributes_on_prototype or
+            v8_methods.filter_conditionally_exposed(methods, interface.is_partial)):
+        prepare_prototype_and_interface_object_func = '%s::preparePrototypeAndInterfaceObject' % v8_class_name_or_partial  # pylint: disable=invalid-name
+
+    context.update({
+        'prepare_prototype_and_interface_object_func': prepare_prototype_and_interface_object_func,
+    })
+
     context.update({
         'legacy_caller': legacy_caller(interface.legacy_caller, interface),
         'indexed_property_getter': property_getter(interface.indexed_property_getter, ['index']),
         'indexed_property_setter': property_setter(interface.indexed_property_setter, interface),
         'indexed_property_deleter': property_deleter(interface.indexed_property_deleter),
         'is_override_builtins': 'OverrideBuiltins' in extended_attributes,
         'named_property_getter': property_getter(interface.named_property_getter, ['name']),
         'named_property_setter': property_setter(interface.named_property_setter, interface),
         'named_property_deleter': property_deleter(interface.named_property_deleter),
     })
@@ skipping 957 matching lines @@
     extended_attributes = deleter.extended_attributes
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(deleter, 'CallWith', 'ScriptState')
     is_ce_reactions = 'CEReactions' in extended_attributes
     return {
         'is_call_with_script_state': is_call_with_script_state,
         'is_ce_reactions': is_ce_reactions,
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }