HeapSupplements are now just Supplements.

third_party/WebKit/Source/modules/webdatabase/DatabaseClient.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 26 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class Database;
 class ExecutionContext;
 class InspectorDatabaseAgent;
 class Page;
 
-class MODULES_EXPORT DatabaseClient : public HeapSupplement<Page> {
+class MODULES_EXPORT DatabaseClient : public Supplement<Page> {
     WTF_MAKE_NONCOPYABLE(DatabaseClient);
 public:
     DatabaseClient();
     virtual ~DatabaseClient() { }
 
     DECLARE_VIRTUAL_TRACE();
 
     virtual bool allowDatabase(ExecutionContext*, const String& name, const String& displayName, unsigned long estimatedSize) = 0;
 
     void didOpenDatabase(Database*, const String& domain, const String& name, const String& version);
 
     static DatabaseClient* fromPage(Page*);
     static DatabaseClient* from(ExecutionContext*);
     static const char* supplementName();
 
     void setInspectorAgent(InspectorDatabaseAgent*);
 
 private:
     Member<InspectorDatabaseAgent> m_inspectorAgent;
 };
 
 MODULES_EXPORT void provideDatabaseClientTo(Page&, RawPtr<DatabaseClient>);
 
 } // namespace blink
 
 #endif // DatabaseClient_h