Do not show image placeholders for CSS sprites

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

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 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,
@@ skipping 35 matching lines @@
       m_cachedImage(image) {}
 
 CSSImageValue::CSSImageValue(const AtomicString& absoluteURL)
     : CSSValue(ImageClass),
       m_relativeURL(absoluteURL),
       m_absoluteURL(absoluteURL) {}
 
 CSSImageValue::~CSSImageValue() {}
 
 StyleImage* CSSImageValue::cacheImage(const Document& document,
-                                      CrossOriginAttributeValue crossOrigin) {
+                                      CrossOriginAttributeValue crossOrigin,
+                                      bool allowImagePlaceholder) {
   if (!m_cachedImage) {
     if (m_absoluteURL.isEmpty())
       reResolveURL(document);
     ResourceRequest resourceRequest(m_absoluteURL);
     resourceRequest.setHTTPReferrer(SecurityPolicy::generateReferrer(
         m_referrer.referrerPolicy, resourceRequest.url(), m_referrer.referrer));
     FetchRequest request(resourceRequest, m_initiatorName.isEmpty()
                                               ? FetchInitiatorTypeNames::css
                                               : m_initiatorName);
 
     if (crossOrigin != CrossOriginAttributeNotSet)
       request.setCrossOriginAccessControl(document.getSecurityOrigin(),
                                           crossOrigin);
-    if (document.settings() && document.settings()->getFetchImagePlaceholders())
+    if (document.settings() &&
+        document.settings()->getFetchImagePlaceholders() &&
+        allowImagePlaceholder)
       request.setAllowImagePlaceholder();
 
     if (ImageResourceContent* cachedImage =
             ImageResourceContent::fetch(request, document.fetcher()))
       m_cachedImage =
           StyleFetchedImage::create(cachedImage, document, request.url());
     else
       m_cachedImage = StyleInvalidImage::create(url());
   }
 
@@ skipping 45 matching lines @@
 void CSSImageValue::reResolveURL(const Document& document) const {
   KURL url = document.completeURL(m_relativeURL);
   AtomicString urlString(url.getString());
   if (urlString == m_absoluteURL)
     return;
   m_absoluteURL = urlString;
   m_cachedImage.clear();
 }
 
 }  // namespace blink