Add [CachedAccessor] attribute to cache (almost) constant accessors (window.document).

third_party/WebKit/Source/bindings/templates/interface.cpp.tmpl

 {% extends 'interface_base.cpp.tmpl' %}
 
 {% set has_prepare_prototype_and_interface_object =
     unscopables or has_conditional_attributes_on_prototype or
     methods | conditionally_exposed(is_partial) %}
 {% set prepare_prototype_and_interface_object_func =
     '%s::preparePrototypeAndInterfaceObject' % v8_class
     if has_prepare_prototype_and_interface_object
     else 'nullptr' %}
 
@@ skipping 684 matching lines @@
 {% else %}
 {% set getter_callback_for_main_world = '0' %}
 {% set setter_callback_for_main_world = '0' %}
 {% endif %}
 {% set property_attribute =
        'static_cast<v8::PropertyAttribute>(%s)' %
        ' | '.join(method.property_attributes or ['v8::None']) %}
 {% set only_exposed_to_private_script = 'V8DOMConfiguration::OnlyExposedToPrivateScript' if method.only_exposed_to_private_script else 'V8DOMConfiguration::ExposedToAllScripts' %}
 {% set holder_check = 'V8DOMConfiguration::CheckHolder' %}
 const V8DOMConfiguration::AttributeConfiguration {{method.name}}OriginSafeAttributeConfiguration = {
-    "{{method.name}}", {{getter_callback}}, {{setter_callback}}, {{getter_callback_for_main_world}}, {{setter_callback_for_main_world}}, &{{v8_class}}::wrapperTypeInfo, v8::ALL_CAN_READ, {{property_attribute}}, {{only_exposed_to_private_script}}, {{property_location(method)}}, {{holder_check}},
+    "{{method.name}}", {{getter_callback}}, {{setter_callback}}, {{getter_callback_for_main_world}}, {{setter_callback_for_main_world}}, nullptr, &{{v8_class}}::wrapperTypeInfo, v8::ALL_CAN_READ, {{property_attribute}}, {{only_exposed_to_private_script}}, {{property_location(method)}}, {{holder_check}},
 };
 V8DOMConfiguration::installAttribute(isolate, world, {{instance_template}}, {{prototype_template}}, {{method.name}}OriginSafeAttributeConfiguration);
 {%- endmacro %}
 
 
 {##############################################################################}
 {% macro install_indexed_property_handler(target) %}
 {% set indexed_property_getter_callback =
        '%sV8Internal::indexedPropertyGetterCallback' % cpp_class %}
 {% set indexed_property_setter_callback =
@@ skipping 274 matching lines @@
 
 {% for method in methods if method.overloads and method.overloads.has_partial_overloads %}
 void {{v8_class}}::register{{method.name | blink_capitalize}}MethodForPartialInterface(void (*method)(const v8::FunctionCallbackInfo<v8::Value>&))
 {
     {{cpp_class}}V8Internal::{{method.name}}MethodForPartialInterface = method;
 }
 
 {% endfor %}
 {% endif %}
 {% endblock %}