bindings: Retires ScriptWrappable::init, etc.

Source/modules/serviceworkers/InstallEvent.cpp

 /*
  * Copyright (C) 2014 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
@@ skipping 52 matching lines @@
     return ScriptPromise::reject(scriptState, v8::Null(scriptState->isolate()));
 }
 
 const AtomicString& InstallEvent::interfaceName() const
 {
     return EventNames::InstallEvent;
 }
 
 InstallEvent::InstallEvent()
 {
-    ScriptWrappable::init(this);
 }
 
 InstallEvent::InstallEvent(const AtomicString& type, const EventInit& initializer, WaitUntilObserver* observer)
     : InstallPhaseEvent(type, initializer, observer)
 {
-    ScriptWrappable::init(this);
 }
 
 void InstallEvent::trace(Visitor* visitor)
 {
     InstallPhaseEvent::trace(visitor);
 }
 
 } // namespace blink