Simplify EventTarget bindings generation (2)

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)'
     '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())',
 }
 
@@ skipping 253 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