Remove CSS clients of ImageResource

sky/engine/core/css/CSSCrossfadeValue.h

Index: sky/engine/core/css/CSSCrossfadeValue.h
diff --git a/sky/engine/core/css/CSSCrossfadeValue.h b/sky/engine/core/css/CSSCrossfadeValue.h
deleted file mode 100644
index 18b9c53f803e8627488a7317c6b69f7698d0634e..0000000000000000000000000000000000000000
--- a/sky/engine/core/css/CSSCrossfadeValue.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (C) 2011 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
- * 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_CSSCROSSFADEVALUE_H_
-#define SKY_ENGINE_CORE_CSS_CSSCROSSFADEVALUE_H_
-
-#include "sky/engine/core/css/CSSImageGeneratorValue.h"
-#include "sky/engine/core/css/CSSPrimitiveValue.h"
-#include "sky/engine/core/fetch/ImageResource.h"
-#include "sky/engine/core/fetch/ImageResourceClient.h"
-#include "sky/engine/core/fetch/ResourcePtr.h"
-#include "sky/engine/platform/graphics/Image.h"
-
-namespace blink {
-
-class ImageResource;
-class CrossfadeSubimageObserverProxy;
-class RenderObject;
-class Document;
-
-class CSSCrossfadeValue : public CSSImageGeneratorValue {
-    friend class CrossfadeSubimageObserverProxy;
-public:
-    static PassRefPtr<CSSCrossfadeValue> create(PassRefPtr<CSSValue> fromValue, PassRefPtr<CSSValue> toValue)
-    {
-        return adoptRef(new CSSCrossfadeValue(fromValue, toValue));
-    }
-
-    ~CSSCrossfadeValue();
-
-    String customCSSText() const;
-
-    PassRefPtr<Image> image(RenderObject*, const IntSize&);
-    bool isFixedSize() const { return true; }
-    IntSize fixedSize(const RenderObject*);
-
-    bool isPending() const;
-    bool knownToBeOpaque(const RenderObject*) const;
-
-    void loadSubimages(ResourceFetcher*);
-
-    void setPercentage(PassRefPtr<CSSPrimitiveValue> percentageValue) { m_percentageValue = percentageValue; }
-
-    bool equals(const CSSCrossfadeValue&) const;
-
-private:
-    CSSCrossfadeValue(PassRefPtr<CSSValue> fromValue, PassRefPtr<CSSValue> toValue)
-        : CSSImageGeneratorValue(CrossfadeClass)
-        , m_fromValue(fromValue)
-        , m_toValue(toValue)
-        , m_cachedFromImage(0)
-        , m_cachedToImage(0)
-        , m_crossfadeSubimageObserver(this) { }
-
-    class CrossfadeSubimageObserverProxy final : public ImageResourceClient {
-    public:
-        CrossfadeSubimageObserverProxy(CSSCrossfadeValue* ownerValue)
-        : m_ownerValue(ownerValue)
-        , m_ready(false) { }
-
-        virtual ~CrossfadeSubimageObserverProxy() { }
-        virtual void imageChanged(ImageResource*, const IntRect* = 0) override;
-        void setReady(bool ready) { m_ready = ready; }
-    private:
-        CSSCrossfadeValue* m_ownerValue;
-        bool m_ready;
-    };
-
-    void crossfadeChanged(const IntRect&);
-
-    RefPtr<CSSValue> m_fromValue;
-    RefPtr<CSSValue> m_toValue;
-    RefPtr<CSSPrimitiveValue> m_percentageValue;
-
-    ResourcePtr<ImageResource> m_cachedFromImage;
-    ResourcePtr<ImageResource> m_cachedToImage;
-
-    RefPtr<Image> m_generatedImage;
-
-    CrossfadeSubimageObserverProxy m_crossfadeSubimageObserver;
-};
-
-DEFINE_CSS_VALUE_TYPE_CASTS(CSSCrossfadeValue, isCrossfadeValue());
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_CSS_CSSCROSSFADEVALUE_H_