CSSValue Immediates: Change CSSValue to an object instead of a pointer

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 a5d19e7fe5a9c161b2a028ab6e5368432f54a02f..d9b61949c768c4965a227e41f57f4da7dd2589d9 100644
--- a/Source/core/style/StyleFetchedImageSet.cpp
+++ b/Source/core/style/StyleFetchedImageSet.cpp
@@ -47,9 +47,9 @@ StyleFetchedImageSet::~StyleFetchedImageSet()
     m_bestFitImage->removeClient(this);
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> StyleFetchedImageSet::cssValue() const
+CSSValue StyleFetchedImageSet::cssValue() const
 {
-    return m_imageSetValue;
+    return *m_imageSetValue;
 }
 
 bool StyleFetchedImageSet::canRender(const LayoutObject& layoutObject, float multiplier) const