Add [WillBeGarbageCollected] to Event.idl

Source/modules/gamepad/GamepadEvent.h

Index: Source/modules/gamepad/GamepadEvent.h
diff --git a/Source/modules/gamepad/GamepadEvent.h b/Source/modules/gamepad/GamepadEvent.h
index dcadc573369198169b8f77d2f0028bf28925b036..4f77a1c963b3456e9fc71d0518cdf297a7732ad2 100644
--- a/Source/modules/gamepad/GamepadEvent.h
+++ b/Source/modules/gamepad/GamepadEvent.h
@@ -18,17 +18,17 @@ struct GamepadEventInit : public EventInit {
 
 class GamepadEvent FINAL : public Event {
 public:
-    static PassRefPtr<GamepadEvent> create()
+    static PassRefPtrWillBeRawPtr<GamepadEvent> create()
     {
-        return adoptRef(new GamepadEvent);
+        return adoptRefWillBeRefCountedGarbageCollected(new GamepadEvent);
     }
-    static PassRefPtr<GamepadEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<Gamepad> gamepad)
+    static PassRefPtrWillBeRawPtr<GamepadEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<Gamepad> gamepad)
     {
-        return adoptRef(new GamepadEvent(type, canBubble, cancelable, gamepad));
+        return adoptRefWillBeRefCountedGarbageCollected(new GamepadEvent(type, canBubble, cancelable, gamepad));
     }
-    static PassRefPtr<GamepadEvent> create(const AtomicString& type, const GamepadEventInit& initializer)
+    static PassRefPtrWillBeRawPtr<GamepadEvent> create(const AtomicString& type, const GamepadEventInit& initializer)
     {
-        return adoptRef(new GamepadEvent(type, initializer));
+        return adoptRefWillBeRefCountedGarbageCollected(new GamepadEvent(type, initializer));
     }
     virtual ~GamepadEvent();