Add [WillBeGarbageCollected] to Event.idl

Source/modules/mediastream/RTCIceCandidateEvent.cpp

Index: Source/modules/mediastream/RTCIceCandidateEvent.cpp
diff --git a/Source/modules/mediastream/RTCIceCandidateEvent.cpp b/Source/modules/mediastream/RTCIceCandidateEvent.cpp
index 6ad958202667f9a4d0142af061e390bd5f8fa120..04cb7a0e4d4d7a52a6b02e3976d21f40810c6b2d 100644
--- a/Source/modules/mediastream/RTCIceCandidateEvent.cpp
+++ b/Source/modules/mediastream/RTCIceCandidateEvent.cpp
@@ -31,14 +31,14 @@
 
 namespace WebCore {
 
-PassRefPtr<RTCIceCandidateEvent> RTCIceCandidateEvent::create()
+PassRefPtrWillBeRawPtr<RTCIceCandidateEvent> RTCIceCandidateEvent::create()
 {
-    return adoptRef(new RTCIceCandidateEvent);
+    return adoptRefCountedWillBeRefCountedGarbageCollected(new RTCIceCandidateEvent);
 }
 
-PassRefPtr<RTCIceCandidateEvent> RTCIceCandidateEvent::create(bool canBubble, bool cancelable, PassRefPtr<RTCIceCandidate> candidate)
+PassRefPtrWillBeRawPtr<RTCIceCandidateEvent> RTCIceCandidateEvent::create(bool canBubble, bool cancelable, PassRefPtr<RTCIceCandidate> candidate)
 {
-    return adoptRef(new RTCIceCandidateEvent(canBubble, cancelable, candidate));
+    return adoptRefCountedWillBeRefCountedGarbageCollected(new RTCIceCandidateEvent(canBubble, cancelable, candidate));
 }
 
 RTCIceCandidateEvent::RTCIceCandidateEvent()