[ImageResource 4] Split ImageResource into Resource and Image parts

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

 /*
  * 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 15 matching lines @@
 #ifndef StyleFetchedImageSet_h
 #define StyleFetchedImageSet_h
 
 #include "core/fetch/ImageResourceObserver.h"
 #include "core/style/StyleImage.h"
 #include "platform/geometry/LayoutSize.h"
 #include "platform/weborigin/KURL.h"
 
 namespace blink {
 
-class ImageResource;
 class CSSImageSetValue;
 
 // This class keeps one cached image and has access to a set of alternatives.
 
 class StyleFetchedImageSet final : public StyleImage,
                                    public ImageResourceObserver {
   USING_PRE_FINALIZER(StyleFetchedImageSet, dispose);
 
  public:
-  static StyleFetchedImageSet* create(ImageResource* image,
+  static StyleFetchedImageSet* create(ImageResourceContent* image,
                                       float imageScaleFactor,
                                       CSSImageSetValue* value,
                                       const KURL& url) {
     return new StyleFetchedImageSet(image, imageScaleFactor, value, url);
   }
   ~StyleFetchedImageSet() override;
 
   CSSValue* cssValue() const override;
   CSSValue* computedCSSValue() const override;
 
@@ skipping 10 matching lines @@
                        const LayoutSize& defaultObjectSize) const override;
   bool imageHasRelativeSize() const override;
   bool usesImageContainerSize() const override;
   void addClient(LayoutObject*) override;
   void removeClient(LayoutObject*) override;
   PassRefPtr<Image> image(const LayoutObject&,
                           const IntSize&,
                           float) const override;
   float imageScaleFactor() const override { return m_imageScaleFactor; }
   bool knownToBeOpaque(const LayoutObject&) const override;
-  ImageResource* cachedImage() const override;
+  ImageResourceContent* cachedImage() const override;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  StyleFetchedImageSet(ImageResource*,
+  StyleFetchedImageSet(ImageResourceContent*,
                        float imageScaleFactor,
                        CSSImageSetValue*,
                        const KURL&);
 
   void dispose();
 
   String debugName() const override { return "StyleFetchedImageSet"; }
 
-  Member<ImageResource> m_bestFitImage;
+  Member<ImageResourceContent> m_bestFitImage;
   float m_imageScaleFactor;
 
   Member<CSSImageSetValue> m_imageSetValue;  // Not retained; it owns us.
   const KURL m_url;
 };
 
 DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleFetchedImageSet, isImageResourceSet());
 
 }  // namespace blink
 
 #endif  // StyleFetchedImageSet_h