[ImageResource 1a] Change StyleFetchedImage from ResourceClient to ImageResourceObserver

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

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef StyleFetchedImage_h
 #define StyleFetchedImage_h
 
-#include "core/fetch/ResourceClient.h"
+#include "core/fetch/ImageResourceObserver.h"
 #include "core/style/StyleImage.h"
 #include "platform/weborigin/KURL.h"
 
 namespace blink {
 
 class Document;
 class ImageResource;
 
-class StyleFetchedImage final : public StyleImage, private ResourceClient {
+class StyleFetchedImage final : public StyleImage,
+                                public ImageResourceObserver {
   USING_PRE_FINALIZER(StyleFetchedImage, dispose);
-  USING_GARBAGE_COLLECTED_MIXIN(StyleFetchedImage);
 
  public:
   static StyleFetchedImage* create(ImageResource* image,
                                    const Document& document,
                                    const KURL& url) {
     return new StyleFetchedImage(image, document, url);
   }
   ~StyleFetchedImage() override;
 
   WrappedImagePtr data() const override;
 
   CSSValue* cssValue() const override;
   CSSValue* computedCSSValue() const override;
 
   bool canRender() const override;
   bool isLoaded() const override;
   bool errorOccurred() const override;
   LayoutSize imageSize(const LayoutObject&,
                        float multiplier,
                        const LayoutSize& defaultObjectSize) const override;
   bool imageHasRelativeSize() const override;
   bool usesImageContainerSize() const override;
   void addClient(LayoutObject*) override;
   void removeClient(LayoutObject*) override;
-  void notifyFinished(Resource*) override;
+  void imageNotifyFinished(ImageResource*) override;
   String debugName() const override { return "StyleFetchedImage"; }
   PassRefPtr<Image> image(const LayoutObject&,
                           const IntSize&,
                           float zoom) const override;
   bool knownToBeOpaque(const LayoutObject&) const override;
   ImageResource* cachedImage() const override;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   StyleFetchedImage(ImageResource*, const Document&, const KURL&);
 
   void dispose();
 
   Member<ImageResource> m_image;
   Member<const Document> m_document;
   const KURL m_url;
 };
 
 DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleFetchedImage, isImageResource());
 
 }  // namespace blink
 #endif