Revert "Add [WillBeGarbageCollected] to Event.idl"

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index b698359de2bfac80ad6a87880b71b9e082b83002..8b3e5b2279e303728e6257e63827239d4aaaf3b8 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3735,9 +3735,9 @@ void Document::enqueueResizeEvent()
     ensureScriptedAnimationController().enqueuePerFrameEvent(event.release());
 }
 
-PassRefPtrWillBeRawPtr<Event> Document::createEvent(const String& eventType, ExceptionState& exceptionState)
+PassRefPtr<Event> Document::createEvent(const String& eventType, ExceptionState& exceptionState)
 {
-    RefPtrWillBeRawPtr<Event> event = EventFactory::create(eventType);
+    RefPtr<Event> event = EventFactory::create(eventType);
     if (event)
         return event.release();
 
@@ -3745,7 +3745,7 @@ PassRefPtrWillBeRawPtr<Event> Document::createEvent(const String& eventType, Exc
     return nullptr;
 }
 
-PassRefPtrWillBeRawPtr<Event> Document::createEvent(ExceptionState& exceptionState)
+PassRefPtr<Event> Document::createEvent(ExceptionState& exceptionState)
 {
     if (!isSVGDocument()) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, 0));