Revert "Add [WillBeGarbageCollected] to Event.idl"

Source/core/events/HashChangeEvent.h

Index: Source/core/events/HashChangeEvent.h
diff --git a/Source/core/events/HashChangeEvent.h b/Source/core/events/HashChangeEvent.h
index 96be059e785119c4e2acea2282662bb90ba6354d..ee7d77da192283fb69e6e6856039e4099686fcb8 100644
--- a/Source/core/events/HashChangeEvent.h
+++ b/Source/core/events/HashChangeEvent.h
@@ -37,19 +37,19 @@ struct HashChangeEventInit : public EventInit {
 
 class HashChangeEvent FINAL : public Event {
 public:
-    static PassRefPtrWillBeRawPtr<HashChangeEvent> create()
+    static PassRefPtr<HashChangeEvent> create()
     {
-        return adoptRefWillBeRefCountedGarbageCollected(new HashChangeEvent);
+        return adoptRef(new HashChangeEvent);
     }
 
-    static PassRefPtrWillBeRawPtr<HashChangeEvent> create(const String& oldURL, const String& newURL)
+    static PassRefPtr<HashChangeEvent> create(const String& oldURL, const String& newURL)
     {
-        return adoptRefWillBeRefCountedGarbageCollected(new HashChangeEvent(oldURL, newURL));
+        return adoptRef(new HashChangeEvent(oldURL, newURL));
     }
 
-    static PassRefPtrWillBeRawPtr<HashChangeEvent> create(const AtomicString& type, const HashChangeEventInit& initializer)
+    static PassRefPtr<HashChangeEvent> create(const AtomicString& type, const HashChangeEventInit& initializer)
     {
-        return adoptRefWillBeRefCountedGarbageCollected(new HashChangeEvent(type, initializer));
+        return adoptRef(new HashChangeEvent(type, initializer));
     }
 
     void initHashChangeEvent(const AtomicString& eventType, bool canBubble, bool cancelable, const String& oldURL, const String& newURL)