Oilpan: add transition types to Navigator and its supplements.

Source/modules/webmidi/NavigatorWebMIDI.h

Index: Source/modules/webmidi/NavigatorWebMIDI.h
diff --git a/Source/modules/webmidi/NavigatorWebMIDI.h b/Source/modules/webmidi/NavigatorWebMIDI.h
index 11b7f6984d40c9b520c36f6e92b58a8975d8d582..3d7f9221f1a8f3869758911ddf56ea9f4f2ccd0b 100644
--- a/Source/modules/webmidi/NavigatorWebMIDI.h
+++ b/Source/modules/webmidi/NavigatorWebMIDI.h
@@ -32,6 +32,7 @@
 #define NavigatorWebMIDI_h
 
 #include "core/frame/DOMWindowProperty.h"
+#include "heap/Handle.h"
 #include "modules/webmidi/MIDIOptions.h"
 #include "platform/Supplementable.h"
 
@@ -40,7 +41,8 @@ namespace WebCore {
 class MIDIAccessPromise;
 class Navigator;
 
-class NavigatorWebMIDI FINAL : public Supplement<Navigator>, public DOMWindowProperty {
+class NavigatorWebMIDI FINAL : public NoBaseWillBeGarbageCollectedFinalized<NavigatorWebMIDI>, public WillBeHeapSupplement<Navigator>, public DOMWindowProperty {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorWebMIDI);
 public:
     virtual ~NavigatorWebMIDI();
     static NavigatorWebMIDI& from(Navigator&);
@@ -48,6 +50,8 @@ public:
     static PassRefPtrWillBeRawPtr<MIDIAccessPromise> requestMIDIAccess(Navigator&, const Dictionary&);
     PassRefPtrWillBeRawPtr<MIDIAccessPromise> requestMIDIAccess(const Dictionary&);
 
+    void trace(Visitor*) { }
+
 private:
     NavigatorWebMIDI(LocalFrame*);
     static const char* supplementName();