Simplify Supplementables post Oilpan.

third_party/WebKit/Source/core/frame/LocalDOMWindow.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 45 matching lines @@
 class ScriptCallStack;
 class SecurityOrigin;
 
 enum PageshowEventPersistence {
     PageshowEventNotPersisted = 0,
     PageshowEventPersisted = 1
 };
 
 // Note: if you're thinking of returning something DOM-related by reference,
 // please ping dcheng@chromium.org first. You probably don't want to do that.
-class CORE_EXPORT LocalDOMWindow final : public DOMWindow, public HeapSupplementable<LocalDOMWindow>, public DOMWindowLifecycleNotifier {
+class CORE_EXPORT LocalDOMWindow final : public DOMWindow, public Supplementable<LocalDOMWindow>, public DOMWindowLifecycleNotifier {
     USING_GARBAGE_COLLECTED_MIXIN(LocalDOMWindow);
     USING_PRE_FINALIZER(LocalDOMWindow, dispose);
 public:
     static RawPtr<Document> createDocument(const String& mimeType, const DocumentInit&, bool forceXHTML);
     static RawPtr<LocalDOMWindow> create(LocalFrame& frame)
     {
         return new LocalDOMWindow(frame);
     }
 
     ~LocalDOMWindow() override;
@@ skipping 204 matching lines @@
 }
 
 inline String LocalDOMWindow::defaultStatus() const
 {
     return m_defaultStatus;
 }
 
 } // namespace blink
 
 #endif // LocalDOMWindow_h