IDL: Add [Custom=CallEpilogue] to eliminate CG special cases

Source/bindings/templates/methods.cpp

 {% from 'conversions.cpp' import v8_value_to_local_cpp_value %}
 
 
 {##############################################################################}
 {% macro generate_method(method, world_suffix) %}
 {% filter conditional(method.conditional_string) %}
 {% if method.returns_promise and method.has_exception_state %}
 static void {{method.name}}{{method.overload_index}}Method{{world_suffix}}Promise(const v8::FunctionCallbackInfo<v8::Value>& info, ExceptionState& exceptionState)
 {% else %}
 static void {{method.name}}{{method.overload_index}}Method{{world_suffix}}(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 252 matching lines @@
 {%- elif v8_set_return_value %}
 {% if method.is_explicit_nullable %}
 if (result.isNull())
     v8SetReturnValueNull(info);
 else
     {{v8_set_return_value}};
 {% else %}
 {{v8_set_return_value}};
 {% endif %}
 {%- endif %}{# None for void #}
-{# Post-set #}
-{% if interface_name in ('EventTarget', 'MediaQueryList')
-    and method.name in ('addEventListener', 'removeEventListener', 'addListener', 'removeListener') %}
-{% set hidden_dependency_action = 'addHiddenValueToArray'
-       if method.name in ('addEventListener', 'addListener') else 'removeHiddenValueFromArray' %}
-{% set argument_index = '1' if interface_name == 'EventTarget' else '0' %}
-{# Length check needed to skip action on legacy calls without enough arguments.
-   http://crbug.com/353484 #}
-if (info.Length() >= {{argument_index}} + 1 && listener && !impl->toNode())
-    {{hidden_dependency_action}}(info.GetIsolate(), info.Holder(), info[{{argument_index}}], {{v8_class}}::eventListenerCacheIndex);
+{% if method.is_custom_call_epilogue %}
+{{v8_class}}::{{method.name}}MethodEpilogueCustom(info, impl);
 {% endif %}
 {% endmacro %}
 
 
 {######################################}
 {% macro throw_type_error(method, error_message) %}
 {% if method.has_exception_state %}
 exceptionState.throwTypeError({{error_message}});
 {{propagate_error_with_exception_state(method)}}
 {% elif method.idl_type == 'Promise' %}
@@ skipping 368 matching lines @@
                               if method.overloads else
                               method.runtime_enabled_function) %}
     prototypeObject->Set(v8AtomicString(isolate, "{{method.name}}"), v8::FunctionTemplate::New(isolate, {{cpp_class_or_partial}}V8Internal::{{method.name}}MethodCallback, v8Undefined(), defaultSignature, {{method.number_of_required_arguments}})->GetFunction());
     {% endfilter %}{# runtime_enabled() #}
     {% endfilter %}{# exposed() #}
     {% endfilter %}{# per_context_enabled() #}
     {% endfor %}
     {% endif %}
 }
 {%- endmacro %}