Oilpan: Unship Oilpan from CSSValues

Source/core/style/StyleFetchedImageSet.cpp

Index: Source/core/style/StyleFetchedImageSet.cpp
diff --git a/Source/core/style/StyleFetchedImageSet.cpp b/Source/core/style/StyleFetchedImageSet.cpp
index b5732d8fda2289ea1e6afcfeb79089396fd710c4..5ede3520932f77c1428f063f53d2f99e05be4855 100644
--- a/Source/core/style/StyleFetchedImageSet.cpp
+++ b/Source/core/style/StyleFetchedImageSet.cpp
@@ -47,7 +47,7 @@ StyleFetchedImageSet::~StyleFetchedImageSet()
     m_bestFitImage->removeClient(this);
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> StyleFetchedImageSet::cssValue() const
+PassRefPtr<CSSValue> StyleFetchedImageSet::cssValue() const
 {
     return m_imageSetValue;
 }
@@ -121,7 +121,6 @@ bool StyleFetchedImageSet::knownToBeOpaque(const LayoutObject* layoutObject) con
 
 DEFINE_TRACE(StyleFetchedImageSet)
 {
-    visitor->trace(m_imageSetValue);
     StyleImage::trace(visitor);
 }