Retire ThreadState::registerPreFinalizer<T>()

third_party/WebKit/Source/platform/mac/ScrollAnimatorMac.mm

 /*
  * Copyright (C) 2010, 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 682 matching lines @@
 
 ScrollAnimatorMac::ScrollAnimatorMac(ScrollableArea* scrollableArea)
     : ScrollAnimatorBase(scrollableArea),
       m_taskRunner(Platform::current()
                        ->currentThread()
                        ->scheduler()
                        ->timerTaskRunner()
                        ->clone()),
       m_haveScrolledSincePageLoad(false),
       m_needsScrollerStyleUpdate(false) {
-  ThreadState::current()->registerPreFinalizer(this);
-
   m_scrollAnimationHelperDelegate.adoptNS(
       [[BlinkScrollAnimationHelperDelegate alloc] initWithScrollAnimator:this]);
   m_scrollAnimationHelper.adoptNS(
       [[NSClassFromString(@"NSScrollAnimationHelper") alloc]
           initWithDelegate:m_scrollAnimationHelperDelegate.get()]);
 
   m_scrollbarPainterControllerDelegate.adoptNS(
       [[BlinkScrollbarPainterControllerDelegate alloc]
           initWithScrollableArea:scrollableArea]);
   m_scrollbarPainterController =
@@ skipping 366 matching lines @@
     rectInViewCoordinates =
         verticalScrollbar->convertToContainingWidget(scrollerThumb);
 
   if (rectInViewCoordinates == m_visibleScrollerThumbRect)
     return;
 
   m_visibleScrollerThumbRect = rectInViewCoordinates;
 }
 
 }  // namespace blink