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

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

Index: third_party/WebKit/Source/core/css/CSSImageValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSImageValue.h b/third_party/WebKit/Source/core/css/CSSImageValue.h
index a75ad80692b2fca7f6999366601f8b8a05ba35f1..6786faadc89d18a6da00d021139e277badc24649 100644
--- a/third_party/WebKit/Source/core/css/CSSImageValue.h
+++ b/third_party/WebKit/Source/core/css/CSSImageValue.h
@@ -23,6 +23,7 @@
 
 #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"
@@ -56,7 +57,8 @@ public:
 
     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; }