Oilpan: prefinalize StyleFetchedImage* image resource clients.

third_party/WebKit/Source/core/style/StyleFetchedImageSet.cpp

 /*
  * Copyright (C) 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 23 matching lines @@
 namespace blink {
 
 StyleFetchedImageSet::StyleFetchedImageSet(ImageResource* image, float imageScaleFactor, CSSImageSetValue* value, const KURL& url)
     : m_bestFitImage(image)
     , m_imageScaleFactor(imageScaleFactor)
     , m_imageSetValue(value)
     , m_url(url)
 {
     m_isImageResourceSet = true;
     m_bestFitImage->addClient(this);
+#if ENABLE(OILPAN)
+    ThreadState::current()->registerPreFinalizer(this);
+#endif
 }
 
+StyleFetchedImageSet::~StyleFetchedImageSet()
+{
+#if !ENABLE(OILPAN)
+    dispose();
+#endif
+}
 
-StyleFetchedImageSet::~StyleFetchedImageSet()
+void StyleFetchedImageSet::dispose()
 {
     m_bestFitImage->removeClient(this);
 }
 
 WrappedImagePtr StyleFetchedImageSet::data() const
 {
     return m_bestFitImage.get();
 }
 
 ImageResource* StyleFetchedImageSet::cachedImage() const
@@ skipping 77 matching lines @@
     return m_bestFitImage->image()->currentFrameKnownToBeOpaque(Image::PreCacheMetadata);
 }
 
 DEFINE_TRACE(StyleFetchedImageSet)
 {
     visitor->trace(m_imageSetValue);
     StyleImage::trace(visitor);
 }
 
 } // namespace blink