HeapSupplements are now just Supplements.

third_party/WebKit/Source/modules/donottrack/NavigatorDoNotTrack.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "core/frame/DOMWindowProperty.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class LocalFrame;
 class Navigator;
 
-class NavigatorDoNotTrack final : public GarbageCollectedFinalized<NavigatorDoNotTrack>, public HeapSupplement<Navigator>, public DOMWindowProperty {
+class NavigatorDoNotTrack final : public GarbageCollectedFinalized<NavigatorDoNotTrack>, public Supplement<Navigator>, public DOMWindowProperty {
     USING_GARBAGE_COLLECTED_MIXIN(NavigatorDoNotTrack);
 public:
     static NavigatorDoNotTrack& from(Navigator&);
     virtual ~NavigatorDoNotTrack();
 
     static String doNotTrack(Navigator&);
 
     String doNotTrack();
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit NavigatorDoNotTrack(LocalFrame*);
     static const char* supplementName();
 };
 
 } // namespace blink
 
 #endif // NavigatorDoNotTrack_h