Document* -> Document& for loadSubimages and friends.

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 36 matching lines @@
     : CSSValue(ImageClass)
     , m_relativeURL(absoluteURL)
     , m_absoluteURL(absoluteURL)
 {
 }
 
 CSSImageValue::~CSSImageValue()
 {
 }
 
-StyleImage* CSSImageValue::cacheImage(Document* document, CrossOriginAttributeValue crossOrigin)
+StyleImage* CSSImageValue::cacheImage(const Document& document, CrossOriginAttributeValue crossOrigin)
 {
-    ASSERT(document);
-
     if (!m_cachedImage) {
         FetchRequest request(ResourceRequest(m_absoluteURL), m_initiatorName.isEmpty() ? FetchInitiatorTypeNames::css : m_initiatorName);
         request.mutableResourceRequest().setHTTPReferrer(SecurityPolicy::generateReferrer(m_referrer.referrerPolicy, request.url(), m_referrer.referrer));
 
         if (crossOrigin != CrossOriginAttributeNotSet)
-            request.setCrossOriginAccessControl(document->getSecurityOrigin(), crossOrigin);
+            request.setCrossOriginAccessControl(document.getSecurityOrigin(), crossOrigin);
 
-        if (ImageResource* cachedImage = ImageResource::fetch(request, document->fetcher()))
+        if (ImageResource* cachedImage = ImageResource::fetch(request, document.fetcher()))
             m_cachedImage = StyleFetchedImage::create(cachedImage, document, request.url());
         else
             m_cachedImage = StyleInvalidImage::create(url());
     }
 
     return m_cachedImage.get();
 }
 
-void CSSImageValue::restoreCachedResourceIfNeeded(Document& document) const
+void CSSImageValue::restoreCachedResourceIfNeeded(const Document& document) const
 {
     if (!m_cachedImage || !document.fetcher() || m_absoluteURL.isNull())
         return;
     if (document.fetcher()->cachedResource(KURL(ParsedURLString, m_absoluteURL)))
         return;
 
     ImageResource* resource = m_cachedImage->cachedImage();
     if (!resource)
         return;
 
@@ skipping 38 matching lines @@
 {
     KURL url = document.completeURL(m_relativeURL);
     AtomicString urlString(url.getString());
     if (urlString == m_absoluteURL)
         return;
     m_absoluteURL = urlString;
     m_cachedImage.clear();
 }
 
 } // namespace blink