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

third_party/WebKit/Source/core/css/CSSImageSetValue.cpp

 /*
  * 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
@@ skipping 15 matching lines @@
 #include "core/css/CSSImageSetValue.h"
 
 #include "core/css/CSSImageValue.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/dom/Document.h"
 #include "core/fetch/FetchInitiatorTypeNames.h"
 #include "core/fetch/FetchRequest.h"
 #include "core/fetch/ImageResource.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/ResourceLoaderOptions.h"
+#include "core/frame/Settings.h"
 #include "core/style/StyleFetchedImageSet.h"
 #include "core/style/StyleInvalidImage.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityPolicy.h"
 #include "wtf/text/StringBuilder.h"
 #include <algorithm>
 
 namespace blink {
 
 CSSImageSetValue::CSSImageSetValue()
@@ skipping 47 matching lines @@
 {
     return !m_cachedImage || deviceScaleFactor != m_cachedScaleFactor;
 }
 
 StyleImage* CSSImageSetValue::cachedImage(float deviceScaleFactor) const
 {
     ASSERT(!isCachePending(deviceScaleFactor));
     return m_cachedImage.get();
 }
 
-StyleImage* CSSImageSetValue::cacheImage(const Document& document, float deviceScaleFactor, CrossOriginAttributeValue crossOrigin)
+StyleImage* CSSImageSetValue::cacheImage(const Document& document, float deviceScaleFactor, CrossOriginAttributeValue crossOrigin, ImageResource::PlaceholderRequestType placeholderRequestType)
 {
     if (!m_imagesInSet.size())
         fillImageSet();
 
     if (isCachePending(deviceScaleFactor)) {
         // FIXME: In the future, we want to take much more than deviceScaleFactor into acount here.
         // All forms of scale should be included: Page::pageScaleFactor(), LocalFrame::pageZoomFactor(),
         // and any CSS transforms. https://bugs.webkit.org/show_bug.cgi?id=81698
         ImageWithScale image = bestImageForScaleFactor(deviceScaleFactor);
         FetchRequest request(ResourceRequest(document.completeURL(image.imageURL)), FetchInitiatorTypeNames::css);
         request.mutableResourceRequest().setHTTPReferrer(image.referrer);
 
         if (crossOrigin != CrossOriginAttributeNotSet)
             request.setCrossOriginAccessControl(document.getSecurityOrigin(), crossOrigin);
 
-        if (ImageResource* cachedImage = ImageResource::fetch(request, document.fetcher()))
+        if (ImageResource* cachedImage = ImageResource::fetch(request, document.fetcher(), placeholderRequestType))
             m_cachedImage = StyleFetchedImageSet::create(cachedImage, image.scaleFactor, this, request.url());
         else
             m_cachedImage = StyleInvalidImage::create(image.imageURL);
         m_cachedScaleFactor = deviceScaleFactor;
     }
 
     return m_cachedImage.get();
 }
 
 String CSSImageSetValue::customCSSText() const
@@ skipping 44 matching lines @@
 CSSImageSetValue* CSSImageSetValue::valueWithURLsMadeAbsolute()
 {
     CSSImageSetValue* value = CSSImageSetValue::create();
     for (auto& item : *this)
         item->isImageValue() ? value->append(*toCSSImageValue(*item).valueWithURLMadeAbsolute()) : value->append(*item);
     return value;
 }
 
 
 } // namespace blink