Replace custom EventTarget toNative call with [ToNativeArg] extended attribute

Source/bindings/scripts/v8_types.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # 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
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 318 matching lines @@
     'octet': 'toUInt8({arguments})',
     'short': 'toInt16({arguments})',
     'unsigned short': 'toUInt16({arguments})',
     'long': 'toInt32({arguments})',
     'unsigned long': 'toUInt32({arguments})',
     'long long': 'toInt64({arguments})',
     'unsigned long long': 'toUInt64({arguments})',
     # Interface types
     'CompareHow': 'static_cast<Range::CompareHow>({v8_value}->Int32Value())',
     'Dictionary': 'Dictionary({v8_value}, info.GetIsolate())',
-    # FIXME: EventListener is special-cased in templates instead, because
-    # removeEventListener uses ListenerFindOnly (only use) instead of
-    # ListenerFindOrCreate.
-    # 'EventListener': 'V8EventListenerList::getEventListener({v8_value}, false, ListenerFindOrCreate/ListenerFindOnly)'
+    'EventListener': 'V8EventListenerList::getEventListener({v8_value}, false, {arguments})',
     'EventTarget': 'V8DOMWrapper::isDOMWrapper({v8_value}) ? toWrapperTypeInfo(v8::Handle<v8::Object>::Cast({v8_value}))->toEventTarget(v8::Handle<v8::Object>::Cast({v8_value})) : 0',
     'MediaQueryListListener': 'MediaQueryListListener::create(ScriptValue({v8_value}, info.GetIsolate()))',
     'NodeFilter': 'toNodeFilter({v8_value}, info.GetIsolate())',
     'Promise': 'ScriptPromise({v8_value}, info.GetIsolate())',
     'SerializedScriptValue': 'SerializedScriptValue::create({v8_value}, info.GetIsolate())',
     'ScriptValue': 'ScriptValue({v8_value}, info.GetIsolate())',
     'Window': 'toDOMWindow({v8_value}, info.GetIsolate())',
     'XPathNSResolver': 'toXPathNSResolver({v8_value}, info.GetIsolate())',
 }
 
 
 def v8_value_to_cpp_value(idl_type, extended_attributes, v8_value, index):
     # Composite types
     array_or_sequence_type = idl_type.array_or_sequence_type
     if array_or_sequence_type:
         return v8_value_to_cpp_value_array_or_sequence(array_or_sequence_type, v8_value, index)
 
     # Simple types
     idl_type = idl_type.preprocessed_type
     add_includes_for_type(idl_type)
     base_idl_type = idl_type.base_type
 
-    if 'EnforceRange' in extended_attributes:
+    if 'ToNativeArg' in extended_attributes:
+        arguments = extended_attributes['ToNativeArg']
+    elif 'EnforceRange' in extended_attributes:
         arguments = ', '.join([v8_value, 'EnforceRange', 'exceptionState'])
     elif idl_type.is_integer_type:  # NormalConversion
         arguments = ', '.join([v8_value, 'exceptionState'])
     else:
         arguments = v8_value
 
     if base_idl_type in V8_VALUE_TO_CPP_VALUE:
         cpp_expression_format = V8_VALUE_TO_CPP_VALUE[base_idl_type]
     elif idl_type.is_typed_array_type:
         cpp_expression_format = (
@@ skipping 230 matching lines @@
 def cpp_value_to_v8_value(idl_type, cpp_value, isolate='info.GetIsolate()', creation_context='', extended_attributes=None):
     """Returns an expression that converts a C++ value to a V8 value."""
     # the isolate parameter is needed for callback interfaces
     idl_type, cpp_value = preprocess_idl_type_and_value(idl_type, cpp_value, extended_attributes)
     this_v8_conversion_type = idl_type.v8_conversion_type(extended_attributes)
     format_string = CPP_VALUE_TO_V8_VALUE[this_v8_conversion_type]
     statement = format_string.format(cpp_value=cpp_value, isolate=isolate, creation_context=creation_context)
     return statement
 
 IdlType.cpp_value_to_v8_value = cpp_value_to_v8_value