Add [WillBeGarbageCollected] to Event.idl

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3713 matching lines @@
     ensureScriptedAnimationController().enqueuePerFrameEvent(scrollEvent.release());
 }
 
 void Document::enqueueResizeEvent()
 {
     RefPtr<Event> event = Event::create(EventTypeNames::resize);
     event->setTarget(domWindow());
     ensureScriptedAnimationController().enqueuePerFrameEvent(event.release());
 }
 
-PassRefPtr<Event> Document::createEvent(const String& eventType, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<Event> Document::createEvent(const String& eventType, ExceptionState& exceptionState)
 {
-    RefPtr<Event> event = EventFactory::create(eventType);
+    RefPtrWillBeRawPtr<Event> event = EventFactory::create(eventType);
     if (event)
         return event.release();
 
     exceptionState.throwDOMException(NotSupportedError, "The provided event type ('" + eventType + "') is invalid.");
     return nullptr;
 }
 
-PassRefPtr<Event> Document::createEvent(ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<Event> Document::createEvent(ExceptionState& exceptionState)
 {
     if (!isSVGDocument()) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, 0));
         return nullptr;
     }
 
     UseCounter::count(this, UseCounter::DocumentCreateEventOptionalArgument);
     // Legacy SVGDocument behavior.
     return createEvent("undefined", exceptionState);
 }
@@ skipping 1679 matching lines @@
 void Document::defaultEventHandler(Event* event)
 {
     if (frame() && frame()->remotePlatformLayer()) {
         frame()->chromeClient().forwardInputEvent(this, event);
         return;
     }
     Node::defaultEventHandler(event);
 }
 
 } // namespace WebCore