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 935690d5e3e4f0f3de26312aa1be421d79192d20..e061cac026d72f2e88bbb84317d5c7cf2dd16e93 100644
--- a/Source/core/events/TouchEvent.h
+++ b/Source/core/events/TouchEvent.h
@@ -37,19 +37,20 @@ 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,
-            TouchList* targetTouches, TouchList* changedTouches,
-            const AtomicString& type, PassRefPtr<AbstractView> view,
-            int screenX, int screenY, int pageX, int pageY,
-            bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
+    static PassRefPtrWillBeRawPtr<TouchEvent> create(TouchList* touches,
+        TouchList* targetTouches, TouchList* changedTouches,
+        const AtomicString& type, PassRefPtr<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,
-                type, view, screenX, screenY, pageX, pageY,
-                ctrlKey, altKey, shiftKey, metaKey));
+        return adoptRefWillBeRefCountedGarbageCollected(new TouchEvent(
+            touches, targetTouches, changedTouches,
+            type, view, screenX, screenY, pageX, pageY,
+            ctrlKey, altKey, shiftKey, metaKey));
     }
 
     void initTouchEvent(TouchList* touches, TouchList* targetTouches,