DO NOT SUBMIT really old prototype of sprite recognition for image replacement

third_party/WebKit/Source/core/css/CSSImageValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 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 CSSImageValue_h
 #define CSSImageValue_h
 
 #include "core/CoreExport.h"
 #include "core/css/CSSValue.h"
+#include "core/fetch/ImageResource.h"
 #include "platform/CrossOriginAttributeValue.h"
 #include "platform/weborigin/Referrer.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class Document;
 class KURL;
 class StyleImage;
 class LayoutObject;
@@ skipping 13 matching lines @@
         return new CSSImageValue(rawValue, url, image);
     }
     static CSSImageValue* create(const AtomicString& absoluteURL)
     {
         return new CSSImageValue(absoluteURL);
     }
     ~CSSImageValue();
 
     bool isCachePending() const { return !m_cachedImage; }
     StyleImage* cachedImage() const { ASSERT(!isCachePending()); return m_cachedImage.get(); }
-    StyleImage* cacheImage(const Document&, CrossOriginAttributeValue = CrossOriginAttributeNotSet);
+
+    StyleImage* cacheImage(const Document&, CrossOriginAttributeValue = CrossOriginAttributeNotSet, ImageResource::PlaceholderRequestType = ImageResource::PlaceholderRequestType::DisallowPlaceholder);
 
     const String& url() const { return m_absoluteURL; }
 
     void setReferrer(const Referrer& referrer) { m_referrer = referrer; }
     const Referrer& referrer() const { return m_referrer; }
 
     void reResolveURL(const Document&) const;
 
     String customCSSText() const;
 
@@ skipping 24 matching lines @@
     // Cached image data.
     mutable AtomicString m_absoluteURL;
     mutable Member<StyleImage> m_cachedImage;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageValue, isImageValue());
 
 } // namespace blink
 
 #endif // CSSImageValue_h