Move Image ownership out of CSSValue

Source/core/css/resolver/StyleResourceLoader.h

Index: Source/core/css/resolver/StyleResourceLoader.h
diff --git a/Source/core/css/resolver/StyleResourceLoader.h b/Source/core/css/resolver/StyleResourceLoader.h
index f274d0fe56e162b7ced591c713858d9e8846066d..4e7e74e41fcd2413f9b02dde62d781d5c21e5da6 100644
--- a/Source/core/css/resolver/StyleResourceLoader.h
+++ b/Source/core/css/resolver/StyleResourceLoader.h
@@ -23,6 +23,7 @@
 #ifndef StyleResourceLoader_h
 #define StyleResourceLoader_h
 
+#include "core/style/StyleImage.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 
@@ -33,7 +34,6 @@ class Document;
 class ComputedStyle;
 class RenderStyle;
 class ShapeValue;
-class StyleImage;
 class StylePendingImage;
 
 // Manages loading of resources, requested by the stylesheets.
@@ -52,9 +52,9 @@ public:
 private:
     void loadPendingSVGDocuments(ComputedStyle*, ElementStyleResources&);
 
-    PassRefPtrWillBeRawPtr<StyleImage> loadPendingImage(StylePendingImage*, float deviceScaleFactor);
-    void loadPendingImages(ComputedStyle*, ElementStyleResources&);
-    void loadPendingShapeImage(ComputedStyle*, ShapeValue*, float deviceScaleFactor);
+    PassRefPtrWillBeRawPtr<StyleImage> loadPendingImage(CSSStyleImageMap&, StylePendingImage*, float deviceScaleFactor);
+    void loadPendingImages(ComputedStyle*, ElementStyleResources& elementStyleResources);
+    void loadPendingShapeImage(ComputedStyle*, CSSStyleImageMap&, ShapeValue*, float deviceScaleFactor);
 
     RawPtrWillBeMember<Document> m_document;
 };