HeapSupplements are now just Supplements.

third_party/WebKit/Source/modules/webusb/USBController.cpp

 // 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.
 
 #include "modules/webusb/USBController.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "public/platform/modules/webusb/WebUSBClient.h"
 
 namespace blink {
 
 USBController::~USBController()
 {
 }
 
 void USBController::provideTo(LocalFrame& frame, WebUSBClient* client)
 {
     ASSERT(RuntimeEnabledFeatures::webUSBEnabled());
     USBController* controller = new USBController(frame, client);
-    HeapSupplement<LocalFrame>::provideTo(frame, supplementName(), controller);
+    Supplement<LocalFrame>::provideTo(frame, supplementName(), controller);
 }
 
 USBController& USBController::from(LocalFrame& frame)
 {
-    USBController* controller = static_cast<USBController*>(HeapSupplement<LocalFrame>::from(frame, supplementName()));
+    USBController* controller = static_cast<USBController*>(Supplement<LocalFrame>::from(frame, supplementName()));
     ASSERT(controller);
     return *controller;
 }
 
 const char* USBController::supplementName()
 {
     return "USBController";
 }
 
 USBController::USBController(LocalFrame& frame, WebUSBClient* client)
     : LocalFrameLifecycleObserver(&frame)
     , m_client(client)
 {
 }
 
 void USBController::willDetachFrameHost()
 {
     m_client = nullptr;
 }
 
 DEFINE_TRACE(USBController)
 {
-    HeapSupplement<LocalFrame>::trace(visitor);
+    Supplement<LocalFrame>::trace(visitor);
     LocalFrameLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink