Oilpan: prefinalize StyleFetchedImage* image resource clients.

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

Index: third_party/WebKit/Source/core/style/StyleFetchedImageSet.h
diff --git a/third_party/WebKit/Source/core/style/StyleFetchedImageSet.h b/third_party/WebKit/Source/core/style/StyleFetchedImageSet.h
index d2270396b59aaf2811f7fbc4c8fe394a3e9d9596..2eb58d1f815eba6855570a9abb5613aa9232d6dd 100644
--- a/third_party/WebKit/Source/core/style/StyleFetchedImageSet.h
+++ b/third_party/WebKit/Source/core/style/StyleFetchedImageSet.h
@@ -40,6 +40,7 @@ class CSSImageSetValue;
 
 class StyleFetchedImageSet final : public StyleImage, private ImageResourceClient {
     USING_FAST_MALLOC_WILL_BE_REMOVED(StyleFetchedImageSet);
+    WILL_BE_USING_PRE_FINALIZER(StyleFetchedImageSet, dispose);
 public:
     static PassRefPtrWillBeRawPtr<StyleFetchedImageSet> create(ImageResource* image, float imageScaleFactor, CSSImageSetValue* value, const KURL& url)
     {
@@ -74,16 +75,13 @@ public:
     bool knownToBeOpaque(const LayoutObject*) const override;
     ImageResource* cachedImage() const override;
 
-#if ENABLE(OILPAN)
-    // Promptly remove as a ImageResource client.
-    EAGERLY_FINALIZE();
-    DECLARE_EAGER_FINALIZATION_OPERATOR_NEW();
-#endif
     DECLARE_VIRTUAL_TRACE();
 
 private:
     StyleFetchedImageSet(ImageResource*, float imageScaleFactor, CSSImageSetValue*, const KURL&);
 
+    void dispose();
+
     String debugName() const override { return "StyleFetchedImageSet"; }
 
     ResourcePtr<ImageResource> m_bestFitImage;