HeapSupplements are now just Supplements.

third_party/WebKit/Source/core/dom/CSSSelectorWatch.cpp

 /*
  * 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 38 matching lines @@
     , m_callbackSelectorChangeTimer(this, &CSSSelectorWatch::callbackSelectorChangeTimerFired)
     , m_timerExpirations(0)
 {
 }
 
 CSSSelectorWatch& CSSSelectorWatch::from(Document& document)
 {
     CSSSelectorWatch* watch = fromIfExists(document);
     if (!watch) {
         watch = new CSSSelectorWatch(document);
-        HeapSupplement<Document>::provideTo(document, kSupplementName, watch);
+        Supplement<Document>::provideTo(document, kSupplementName, watch);
     }
     return *watch;
 }
 
 CSSSelectorWatch* CSSSelectorWatch::fromIfExists(Document& document)
 {
-    return static_cast<CSSSelectorWatch*>(HeapSupplement<Document>::from(document, kSupplementName));
+    return static_cast<CSSSelectorWatch*>(Supplement<Document>::from(document, kSupplementName));
 }
 
 void CSSSelectorWatch::callbackSelectorChangeTimerFired(Timer<CSSSelectorWatch>*)
 {
     // Should be ensured by updateSelectorMatches():
     ASSERT(!m_addedSelectors.isEmpty() || !m_removedSelectors.isEmpty());
 
     if (m_timerExpirations < 1) {
         m_timerExpirations++;
         m_callbackSelectorChangeTimer.startOneShot(0, BLINK_FROM_HERE);
@@ skipping 82 matching lines @@
 
         m_watchedCallbackSelectors.append(StyleRule::create(std::move(selectorList), callbackPropertySet));
     }
     document().styleEngine().watchedSelectorsChanged();
 }
 
 DEFINE_TRACE(CSSSelectorWatch)
 {
     visitor->trace(m_watchedCallbackSelectors);
     visitor->trace(m_document);
-    HeapSupplement<Document>::trace(visitor);
+    Supplement<Document>::trace(visitor);
 }
 
 } // namespace blink