Remove CSS clients of ImageResource

sky/engine/core/css/resolver/ElementStyleResources.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google 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.
  *
@@ skipping 14 matching lines @@
 
 #include "gen/sky/core/CSSPropertyNames.h"
 #include "sky/engine/platform/graphics/Color.h"
 #include "sky/engine/platform/heap/Handle.h"
 #include "sky/engine/wtf/HashMap.h"
 #include "sky/engine/wtf/Noncopyable.h"
 
 namespace blink {
 
 class CSSCursorImageValue;
-class CSSImageValue;
 class CSSImageGeneratorValue;
-class CSSImageSetValue;
 class CSSValue;
 class FilterOperation;
 class StyleImage;
 class TextLinkColors;
 
 typedef HashMap<CSSPropertyID, RefPtr<CSSValue> > PendingImagePropertyMap;
 
 // Holds information about resources, requested by stylesheets.
 // Lifetime: per-element style resolve.
 class ElementStyleResources {
 STACK_ALLOCATED();
 WTF_MAKE_NONCOPYABLE(ElementStyleResources);
 public:
     ElementStyleResources();
 
     PassRefPtr<StyleImage> styleImage(Document&, const TextLinkColors&, Color currentColor, CSSPropertyID, CSSValue*);
 
     PassRefPtr<StyleImage> generatedOrPendingFromValue(CSSPropertyID, CSSImageGeneratorValue*);
-    PassRefPtr<StyleImage> cachedOrPendingFromValue(Document&, CSSPropertyID, CSSImageValue*);
-    PassRefPtr<StyleImage> setOrPendingFromValue(CSSPropertyID, CSSImageSetValue*);
 
     const PendingImagePropertyMap& pendingImageProperties() const { return m_pendingImageProperties; }
 
     void clearPendingImageProperties();
 
     float deviceScaleFactor() const { return m_deviceScaleFactor; }
     void setDeviceScaleFactor(float deviceScaleFactor) { m_deviceScaleFactor = deviceScaleFactor; }
 
 private:
     PendingImagePropertyMap m_pendingImageProperties;
     float m_deviceScaleFactor;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_CSS_RESOLVER_ELEMENTSTYLERESOURCES_H_