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 @@
       absolute_url_(url.GetString()),
       cached_image_(image) {}
 
 CSSImageValue::CSSImageValue(const AtomicString& absolute_url)
     : CSSValue(kImageClass),
       relative_url_(absolute_url),
       absolute_url_(absolute_url) {}
 
 CSSImageValue::~CSSImageValue() {}
 
-StyleImage* CSSImageValue::CacheImage(const Document& document,
-                                      CrossOriginAttributeValue cross_origin) {
+StyleImage* CSSImageValue::CacheImage(
+    const Document& document,
+    FetchParameters::PlaceholderImageRequestType placeholder_image_request_type,
+    CrossOriginAttributeValue cross_origin) {
   if (!cached_image_) {
     if (absolute_url_.IsEmpty())
       ReResolveURL(document);
     ResourceRequest resource_request(absolute_url_);
     resource_request.SetHTTPReferrer(SecurityPolicy::GenerateReferrer(
         referrer_.referrer_policy, resource_request.Url(), referrer_.referrer));
     ResourceLoaderOptions options;
     options.initiator_info.name = initiator_name_.IsEmpty()
                                       ? FetchInitiatorTypeNames::css
                                       : initiator_name_;
     FetchParameters params(resource_request, options);
 
     if (cross_origin != kCrossOriginAttributeNotSet) {
       params.SetCrossOriginAccessControl(document.GetSecurityOrigin(),
                                          cross_origin);
     }
 
-    if (document.GetFrame())
+    if (document.GetFrame() &&
+        placeholder_image_request_type == FetchParameters::kAllowPlaceholder)
       document.GetFrame()->MaybeAllowImagePlaceholder(params);
 
     if (ImageResourceContent* cached_image =
             ImageResourceContent::Fetch(params, document.Fetcher())) {
       cached_image_ =
           StyleFetchedImage::Create(cached_image, document, params.Url());
     } else {
       cached_image_ = StyleInvalidImage::Create(Url());
     }
   }
@@ skipping 48 matching lines @@
 void CSSImageValue::ReResolveURL(const Document& document) const {
   KURL url = document.CompleteURL(relative_url_);
   AtomicString url_string(url.GetString());
   if (url_string == absolute_url_)
     return;
   absolute_url_ = url_string;
   cached_image_.Clear();
 }
 
 }  // namespace blink