Add [WillBeGarbageCollected] to Event.idl

Source/modules/webmidi/MIDIConnectionEvent.h

Index: Source/modules/webmidi/MIDIConnectionEvent.h
diff --git a/Source/modules/webmidi/MIDIConnectionEvent.h b/Source/modules/webmidi/MIDIConnectionEvent.h
index de2c53beb95a36fbac3f4acbdd2088e80783f0df..ffa895da533209a9040b4c2e1bb16646959f060b 100644
--- a/Source/modules/webmidi/MIDIConnectionEvent.h
+++ b/Source/modules/webmidi/MIDIConnectionEvent.h
@@ -47,19 +47,19 @@ struct MIDIConnectionEventInit : public EventInit {
 
 class MIDIConnectionEvent FINAL : public Event {
 public:
-    static PassRefPtr<MIDIConnectionEvent> create()
+    static PassRefPtrWillBeRawPtr<MIDIConnectionEvent> create()
     {
-        return adoptRef(new MIDIConnectionEvent());
+        return adoptRefCountedWillBeRefCountedGarbageCollected(new MIDIConnectionEvent());
     }
 
-    static PassRefPtr<MIDIConnectionEvent> create(const AtomicString& type, PassRefPtr<MIDIPort> port)
+    static PassRefPtrWillBeRawPtr<MIDIConnectionEvent> create(const AtomicString& type, PassRefPtr<MIDIPort> port)
     {
-        return adoptRef(new MIDIConnectionEvent(type, port));
+        return adoptRefCountedWillBeRefCountedGarbageCollected(new MIDIConnectionEvent(type, port));
     }
 
-    static PassRefPtr<MIDIConnectionEvent> create(const AtomicString& type, const MIDIConnectionEventInit& initializer)
+    static PassRefPtrWillBeRawPtr<MIDIConnectionEvent> create(const AtomicString& type, const MIDIConnectionEventInit& initializer)
     {
-        return adoptRef(new MIDIConnectionEvent(type, initializer));
+        return adoptRefCountedWillBeRefCountedGarbageCollected(new MIDIConnectionEvent(type, initializer));
     }
 
     RefPtr<MIDIPort> port() { return m_port; }