Add [WillBeGarbageCollected] to Event.idl

Source/core/events/CompositionEvent.h

Index: Source/core/events/CompositionEvent.h
diff --git a/Source/core/events/CompositionEvent.h b/Source/core/events/CompositionEvent.h
index 6b5245324f28781a3cf0ca3ffdd666a78df08f7b..f24500c1e71b19d9e9e01b38b4e9f36f71f3ff18 100644
--- a/Source/core/events/CompositionEvent.h
+++ b/Source/core/events/CompositionEvent.h
@@ -40,19 +40,19 @@ struct CompositionEventInit : UIEventInit {
 
 class CompositionEvent FINAL : public UIEvent {
 public:
-    static PassRefPtr<CompositionEvent> create()
+    static PassRefPtrWillBeRawPtr<CompositionEvent> create()
     {
-        return adoptRef(new CompositionEvent);
+        return adoptRefWillBeRefCountedGarbageCollected(new CompositionEvent);
     }
 
-    static PassRefPtr<CompositionEvent> create(const AtomicString& type, PassRefPtrWillBeRawPtr<AbstractView> view, const String& data, const Vector<CompositionUnderline>& underlines)
+    static PassRefPtrWillBeRawPtr<CompositionEvent> create(const AtomicString& type, PassRefPtrWillBeRawPtr<AbstractView> view, const String& data, const Vector<CompositionUnderline>& underlines)
     {
-        return adoptRef(new CompositionEvent(type, view, data, underlines));
+        return adoptRefWillBeRefCountedGarbageCollected(new CompositionEvent(type, view, data, underlines));
     }
 
-    static PassRefPtr<CompositionEvent> create(const AtomicString& type, const CompositionEventInit& initializer)
+    static PassRefPtrWillBeRawPtr<CompositionEvent> create(const AtomicString& type, const CompositionEventInit& initializer)
     {
-        return adoptRef(new CompositionEvent(type, initializer));
+        return adoptRefWillBeRefCountedGarbageCollected(new CompositionEvent(type, initializer));
     }
 
     virtual ~CompositionEvent();