Unify and generalize thread static persistent finalization.

third_party/WebKit/Source/core/css/CSSValuePool.cpp

 /*
  * Copyright (C) 2011, 2012 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 20 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/Threading.h"
 
 namespace blink {
 
 CSSValuePool& cssValuePool()
 {
     DEFINE_THREAD_SAFE_STATIC_LOCAL(ThreadSpecific<Persistent<CSSValuePool>>, threadSpecificPool, new ThreadSpecific<Persistent<CSSValuePool>>());
     Persistent<CSSValuePool>& poolHandle = *threadSpecificPool;
     if (!poolHandle) {
-        poolHandle = new CSSValuePool();
-        poolHandle.clearOnThreadShutdown();
+        poolHandle = new CSSValuePool;
+        poolHandle.registerAsStaticReference();
     }
     return *poolHandle;
 }
 
 CSSValuePool::CSSValuePool()
     : m_inheritedValue(CSSInheritedValue::create())
     , m_implicitInitialValue(CSSInitialValue::createImplicit())
     , m_explicitInitialValue(CSSInitialValue::createExplicit())
     , m_unsetValue(CSSUnsetValue::create())
     , m_colorTransparent(CSSColorValue::create(Color::transparent))
@@ skipping 119 matching lines @@
     visitor->trace(m_colorWhite);
     visitor->trace(m_colorBlack);
     visitor->trace(m_pixelValueCache);
     visitor->trace(m_percentValueCache);
     visitor->trace(m_numberValueCache);
     visitor->trace(m_fontFaceValueCache);
     visitor->trace(m_fontFamilyValueCache);
 }
 
 } // namespace blink