HeapSupplements are now just Supplements.

third_party/WebKit/Source/modules/presentation/PresentationController.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PresentationController_h
 #define PresentationController_h
 
 #include "core/frame/LocalFrameLifecycleObserver.h"
 #include "modules/ModulesExport.h"
 #include "modules/presentation/Presentation.h"
 #include "modules/presentation/PresentationRequest.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/modules/presentation/WebPresentationClient.h"
 #include "public/platform/modules/presentation/WebPresentationController.h"
 
 namespace blink {
 
 class LocalFrame;
 class PresentationConnection;
 class WebPresentationAvailabilityCallback;
 class WebPresentationConnectionClient;
 enum class WebPresentationConnectionCloseReason;
 enum class WebPresentationConnectionState;
 
 // The coordinator between the various page exposed properties and the content
 // layer represented via |WebPresentationClient|.
 class MODULES_EXPORT PresentationController final
     : public GarbageCollectedFinalized<PresentationController>
-    , public HeapSupplement<LocalFrame>
+    , public Supplement<LocalFrame>
     , public LocalFrameLifecycleObserver
     , public WebPresentationController {
     USING_GARBAGE_COLLECTED_MIXIN(PresentationController);
     WTF_MAKE_NONCOPYABLE(PresentationController);
 public:
     ~PresentationController() override;
 
     static RawPtr<PresentationController> create(LocalFrame&, WebPresentationClient*);
 
     static const char* supplementName();
     static PresentationController* from(LocalFrame&);
 
     static void provideTo(LocalFrame&, WebPresentationClient*);
 
     WebPresentationClient* client();
 
-    // Implementation of HeapSupplement.
+    // Implementation of Supplement.
     DECLARE_VIRTUAL_TRACE();
 
     // Implementation of WebPresentationController.
     void didStartDefaultSession(WebPresentationConnectionClient*) override;
     void didChangeSessionState(WebPresentationConnectionClient*, WebPresentationConnectionState) override;
     void didCloseConnection(WebPresentationConnectionClient*, WebPresentationConnectionCloseReason, const WebString& message) override;
     void didReceiveSessionTextMessage(WebPresentationConnectionClient*, const WebString&) override;
     void didReceiveSessionBinaryMessage(WebPresentationConnectionClient*, const uint8_t* data, size_t length) override;
 
     // Called by the Presentation object to advertize itself to the controller.
@@ skipping 32 matching lines @@
     // The presentation connections associated with that frame.
     // TODO(mlamouri): the PresentationController will keep any created
     // connections alive until the frame is detached. These should be weak ptr
     // so that the connection can be GC'd.
     HeapHashSet<Member<PresentationConnection>> m_connections;
 };
 
 } // namespace blink
 
 #endif // PresentationController_h