Oilpan: have Navigator and its supplements be on the heap by default.

Source/modules/gamepad/NavigatorGamepad.h

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 #include "platform/heap/Handle.h"
 #include "public/platform/WebGamepads.h"
 
 namespace blink {
 
 class Document;
 class Gamepad;
 class GamepadList;
 class Navigator;
 
-class MODULES_EXPORT NavigatorGamepad final : public NoBaseWillBeGarbageCollectedFinalized<NavigatorGamepad>, public WillBeHeapSupplement<Navigator>, public DOMWindowProperty, public PlatformEventController, public DOMWindowLifecycleObserver {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorGamepad);
+class MODULES_EXPORT NavigatorGamepad final : public GarbageCollectedFinalized<NavigatorGamepad>, public HeapSupplement<Navigator>, public DOMWindowProperty, public PlatformEventController, public DOMWindowLifecycleObserver {
+    USING_GARBAGE_COLLECTED_MIXIN(NavigatorGamepad);
 public:
     static NavigatorGamepad* from(Document&);
     static NavigatorGamepad& from(Navigator&);
     virtual ~NavigatorGamepad();
 
     static GamepadList* getGamepads(Navigator&);
     GamepadList* gamepads();
 
     DECLARE_VIRTUAL_TRACE();
 
@@ skipping 17 matching lines @@
     virtual void unregisterWithDispatcher() override;
     virtual bool hasLastData() override;
     virtual void didUpdateData() override;
     virtual void pageVisibilityChanged() override;
 
     // DOMWindowLifecycleObserver
     virtual void didAddEventListener(LocalDOMWindow*, const AtomicString&) override;
     virtual void didRemoveEventListener(LocalDOMWindow*, const AtomicString&) override;
     virtual void didRemoveAllEventListeners(LocalDOMWindow*) override;
 
-    PersistentWillBeMember<GamepadList> m_gamepads;
-    PersistentHeapDequeWillBeHeapDeque<Member<Gamepad>> m_pendingEvents;
+    Member<GamepadList> m_gamepads;
+    HeapDeque<Member<Gamepad>> m_pendingEvents;
     AsyncMethodRunner<NavigatorGamepad> m_dispatchOneEventRunner;
 };
 
 } // namespace blink
 
 #endif // NavigatorGamepad_h