HeapSupplements are now just Supplements.

third_party/WebKit/Source/core/paint/PaintTiming.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 PaintTiming_h
 #define PaintTiming_h
 
 #include "core/dom/Document.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class LocalFrame;
 
 // PaintTiming is responsible for tracking paint-related timings for a given
 // document.
-class PaintTiming final : public GarbageCollectedFinalized<PaintTiming>, public HeapSupplement<Document> {
+class PaintTiming final : public GarbageCollectedFinalized<PaintTiming>, public Supplement<Document> {
     WTF_MAKE_NONCOPYABLE(PaintTiming);
     USING_GARBAGE_COLLECTED_MIXIN(PaintTiming);
 public:
     virtual ~PaintTiming() { }
 
     static PaintTiming& from(Document&);
 
     // mark*() methods record the time for the given paint event, record a trace
     // event, and notify that paint timing has changed. These methods do nothing
     // (early return) if a time has already been recorded for the given paint
@@ skipping 51 matching lines @@
     double m_firstTextPaint = 0.0;
     double m_firstImagePaint = 0.0;
     double m_firstContentfulPaint = 0.0;
 
     Member<Document> m_document;
 };
 
 } // namespace blink
 
 #endif