HeapSupplements are now just Supplements.

third_party/WebKit/Source/modules/webusb/NavigatorUSB.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/NavigatorUSB.h"
 
 #include "core/frame/Navigator.h"
 #include "modules/webusb/USB.h"
 
 namespace blink {
 
 NavigatorUSB& NavigatorUSB::from(Navigator& navigator)
 {
-    NavigatorUSB* supplement = static_cast<NavigatorUSB*>(HeapSupplement<Navigator>::from(navigator, supplementName()));
+    NavigatorUSB* supplement = static_cast<NavigatorUSB*>(Supplement<Navigator>::from(navigator, supplementName()));
     if (!supplement) {
         supplement = new NavigatorUSB(navigator);
         provideTo(navigator, supplementName(), supplement);
     }
     return *supplement;
 }
 
 USB* NavigatorUSB::usb(Navigator& navigator)
 {
     return NavigatorUSB::from(navigator).usb();
 }
 
 USB* NavigatorUSB::usb()
 {
     return m_usb;
 }
 
 DEFINE_TRACE(NavigatorUSB)
 {
     visitor->trace(m_usb);
-    HeapSupplement<Navigator>::trace(visitor);
+    Supplement<Navigator>::trace(visitor);
 }
 
 NavigatorUSB::NavigatorUSB(Navigator& navigator)
 {
     if (navigator.frame())
         m_usb = USB::create(*navigator.frame());
 }
 
 const char* NavigatorUSB::supplementName()
 {
     return "NavigatorUSB";
 }
 
 } // namespace blink