Remove resource type-specific fetching logic from ResourceFetcher

Source/core/html/HTMLLinkElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Rob Buis (rwlbuis@gmail.com)
  * Copyright (C) 2011 Google 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
@@ skipping 717 matching lines @@
         bool blocking = mediaQueryMatches && !m_owner->isAlternate();
         addPendingSheet(blocking ? Blocking : NonBlocking);
 
         // Load stylesheets that are not needed for the layout immediately with low priority.
         FetchRequest request = builder.build(blocking);
         AtomicString crossOriginMode = m_owner->fastGetAttribute(HTMLNames::crossoriginAttr);
         if (!crossOriginMode.isNull()) {
             request.setCrossOriginAccessControl(document().securityOrigin(), crossOriginMode);
             setFetchFollowingCORS();
         }
-        setResource(document().fetcher()->fetchCSSStyleSheet(request));
+        setResource(CSSStyleSheetResource::fetch(request, document().fetcher()));
 
         if (!resource()) {
             // The request may have been denied if (for example) the stylesheet is local and the document is remote, or if there was a Content Security Policy Failure.
             m_loading = false;
             removePendingSheet();
             notifyLoadedSheetAndAllCriticalSubresources(Node::ErrorOccurredLoadingSubresource);
         }
     } else if (m_sheet) {
         // we no longer contain a stylesheet, e.g. perhaps rel or type was changed
         RefPtrWillBeRawPtr<StyleSheet> removedSheet = m_sheet.get();
@@ skipping 17 matching lines @@
         removePendingSheet();
 }
 
 DEFINE_TRACE(LinkStyle)
 {
     visitor->trace(m_sheet);
     LinkResource::trace(visitor);
 }
 
 } // namespace blink