Add [WillBeGarbageCollected] to Event.idl

Source/core/events/TouchEvent.h

Index: Source/core/events/TouchEvent.h
diff --git a/Source/core/events/TouchEvent.h b/Source/core/events/TouchEvent.h
index 3d970a7f94fc0143ffeb39495abee18392fe0326..dcdfea95d5f98438ee4a7844aaf1eaad39815d7f 100644
--- a/Source/core/events/TouchEvent.h
+++ b/Source/core/events/TouchEvent.h
@@ -37,17 +37,17 @@ class TouchEvent FINAL : public MouseRelatedEvent {
 public:
     virtual ~TouchEvent();
 
-    static PassRefPtr<TouchEvent> create()
+    static PassRefPtrWillBeRawPtr<TouchEvent> create()
     {
-        return adoptRef(new TouchEvent);
+        return adoptRefWillBeRefCountedGarbageCollected(new TouchEvent);
     }
-    static PassRefPtr<TouchEvent> create(TouchList* touches,
+    static PassRefPtrWillBeRawPtr<TouchEvent> create(TouchList* touches,
         TouchList* targetTouches, TouchList* changedTouches,
         const AtomicString& type, PassRefPtrWillBeRawPtr<AbstractView> view,
         int screenX, int screenY, int pageX, int pageY,
         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
     {
-        return adoptRef(new TouchEvent(touches, targetTouches, changedTouches,
+        return adoptRefWillBeRefCountedGarbageCollected(new TouchEvent(touches, targetTouches, changedTouches,
             type, view, screenX, screenY, pageX, pageY,
             ctrlKey, altKey, shiftKey, metaKey));
     }