Remove CSS clients of ImageResource

sky/engine/core/css/CSSImageSetValue.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
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef SKY_ENGINE_CORE_CSS_CSSIMAGESETVALUE_H_
-#define SKY_ENGINE_CORE_CSS_CSSIMAGESETVALUE_H_
-
-#include "sky/engine/core/css/CSSValueList.h"
-#include "sky/engine/core/fetch/ResourceFetcher.h"
-#include "sky/engine/platform/weborigin/Referrer.h"
-
-namespace blink {
-
-class ResourceFetcher;
-class StyleFetchedImageSet;
-class StyleImage;
-
-class CSSImageSetValue : public CSSValueList {
-public:
-
-    static PassRefPtr<CSSImageSetValue> create()
-    {
-        return adoptRef(new CSSImageSetValue());
-    }
-    ~CSSImageSetValue();
-
-    StyleFetchedImageSet* cachedImageSet(ResourceFetcher*, float deviceScaleFactor, const ResourceLoaderOptions&);
-    StyleFetchedImageSet* cachedImageSet(ResourceFetcher*, float deviceScaleFactor);
-
-    // Returns a StyleFetchedImageSet if the best fit image has been cached already, otherwise a StylePendingImage.
-    StyleImage* cachedOrPendingImageSet(float);
-
-    String customCSSText() const;
-
-    bool isPending() const { return !m_accessedBestFitImage; }
-
-    struct ImageWithScale {
-        String imageURL;
-        Referrer referrer;
-        float scaleFactor;
-    };
-
-    PassRefPtr<CSSImageSetValue> cloneForCSSOM() const;
-
-protected:
-    ImageWithScale bestImageForScaleFactor();
-
-private:
-    CSSImageSetValue();
-    explicit CSSImageSetValue(const CSSImageSetValue& cloneFrom);
-
-    void fillImageSet();
-    static inline bool compareByScaleFactor(ImageWithScale first, ImageWithScale second) { return first.scaleFactor < second.scaleFactor; }
-
-    RefPtr<StyleImage> m_imageSet;
-    bool m_accessedBestFitImage;
-
-    // This represents the scale factor that we used to find the best fit image. It does not necessarily
-    // correspond to the scale factor of the best fit image.
-    float m_scaleFactor;
-
-    Vector<ImageWithScale> m_imagesInSet;
-};
-
-DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageSetValue, isImageSetValue());
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_CSS_CSSIMAGESETVALUE_H_