Add [WillBeGarbageCollected] to Event.idl

Source/modules/mediastream/RTCDTMFToneChangeEvent.cpp

Index: Source/modules/mediastream/RTCDTMFToneChangeEvent.cpp
diff --git a/Source/modules/mediastream/RTCDTMFToneChangeEvent.cpp b/Source/modules/mediastream/RTCDTMFToneChangeEvent.cpp
index 06c342f9942a6c2beb1f87017b2f1f9d21e77464..087d8a348df16489b3519b162ea6958b034bc2eb 100644
--- a/Source/modules/mediastream/RTCDTMFToneChangeEvent.cpp
+++ b/Source/modules/mediastream/RTCDTMFToneChangeEvent.cpp
@@ -28,20 +28,20 @@
 
 namespace WebCore {
 
-PassRefPtr<RTCDTMFToneChangeEvent> RTCDTMFToneChangeEvent::create()
+PassRefPtrWillBeRawPtr<RTCDTMFToneChangeEvent> RTCDTMFToneChangeEvent::create()
 {
-    return adoptRef(new RTCDTMFToneChangeEvent);
+    return adoptRefWillBeRefCountedGarbageCollected(new RTCDTMFToneChangeEvent);
 }
 
-PassRefPtr<RTCDTMFToneChangeEvent> RTCDTMFToneChangeEvent::create(const String& tone)
+PassRefPtrWillBeRawPtr<RTCDTMFToneChangeEvent> RTCDTMFToneChangeEvent::create(const String& tone)
 {
-    return adoptRef(new RTCDTMFToneChangeEvent(tone));
+    return adoptRefWillBeRefCountedGarbageCollected(new RTCDTMFToneChangeEvent(tone));
 }
 
-PassRefPtr<RTCDTMFToneChangeEvent> RTCDTMFToneChangeEvent::create(const AtomicString& type, const RTCDTMFToneChangeEventInit& initializer)
+PassRefPtrWillBeRawPtr<RTCDTMFToneChangeEvent> RTCDTMFToneChangeEvent::create(const AtomicString& type, const RTCDTMFToneChangeEventInit& initializer)
 {
     ASSERT(type == EventTypeNames::tonechange);
-    return adoptRef(new RTCDTMFToneChangeEvent(initializer));
+    return adoptRefWillBeRefCountedGarbageCollected(new RTCDTMFToneChangeEvent(initializer));
 }
 
 RTCDTMFToneChangeEvent::RTCDTMFToneChangeEvent()