Remove resource type-specific fetching logic from ResourceFetcher

Source/core/loader/LinkLoader.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 #include "config.h"
 #include "core/loader/LinkLoader.h"
 
 #include "core/dom/Document.h"
 #include "core/fetch/FetchInitiatorTypeNames.h"
 #include "core/fetch/FetchRequest.h"
+#include "core/fetch/LinkFetchResource.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/frame/Settings.h"
 #include "core/html/CrossOriginAttribute.h"
 #include "core/html/LinkRelAttribute.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/loader/LinkHeader.h"
 #include "core/loader/PrerenderHandle.h"
 #include "platform/Prerender.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/network/NetworkHints.h"
@@ skipping 126 matching lines @@
         Resource::Type priorityType;
         if (!getPriorityTypeFromAsAttribute(as, priorityType)) {
             document.addConsoleMessage(ConsoleMessage::create(OtherMessageSource, WarningMessageLevel, String("<link rel=preload> must have a valid `as` value")));
             return;
         }
         FetchRequest linkRequest(ResourceRequest(document.completeURL(href)), FetchInitiatorTypeNames::link);
         linkRequest.setPriority(ResourceFetcher::loadPriority(priorityType, linkRequest));
         Settings* settings = document.settings();
         if (settings && settings->logPreload())
             document.addConsoleMessage(ConsoleMessage::create(OtherMessageSource, DebugMessageLevel, String("Preload triggered for " + href.host() + href.path())));
-        setResource(document.fetcher()->fetchLinkPreloadResource(Resource::LinkPreload, linkRequest));
+        setResource(LinkFetchResource::fetch(Resource::LinkPreload, linkRequest, document.fetcher()));
     }
 }
 
 bool LinkLoader::loadLinkFromHeader(const String& headerValue, Document* document)
 {
     if (!document)
         return false;
     LinkHeaderSet headerSet(headerValue);
     for (auto& header : headerSet) {
         if (!header.valid() || header.url().isEmpty() || header.rel().isEmpty())
@@ skipping 25 matching lines @@
         preloadIfNeeded(relAttribute, href, document, as);
 
     // FIXME(crbug.com/323096): Should take care of import.
     if ((relAttribute.isLinkPrefetch() || relAttribute.isLinkSubresource()) && href.isValid() && document.frame()) {
         if (!m_client->shouldLoadLink())
             return false;
         Resource::Type type = relAttribute.isLinkSubresource() ?  Resource::LinkSubresource : Resource::LinkPrefetch;
         FetchRequest linkRequest(ResourceRequest(document.completeURL(href)), FetchInitiatorTypeNames::link);
         if (!crossOriginMode.isNull())
             linkRequest.setCrossOriginAccessControl(document.securityOrigin(), crossOriginMode);
-        setResource(document.fetcher()->fetchLinkResource(type, linkRequest));
+        setResource(LinkFetchResource::fetch(type, linkRequest, document.fetcher()));
     }
 
     if (const unsigned prerenderRelTypes = prerenderRelTypesFromRelAttribute(relAttribute)) {
         if (!m_prerender) {
             m_prerender = PrerenderHandle::create(document, this, href, prerenderRelTypes);
         } else if (m_prerender->url() != href) {
             m_prerender->cancel();
             m_prerender = PrerenderHandle::create(document, this, href, prerenderRelTypes);
         }
         // TODO(gavinp): Handle changes to rel types of existing prerenders.
@@ skipping 13 matching lines @@
         m_prerender.clear();
     }
 }
 
 DEFINE_TRACE(LinkLoader)
 {
     visitor->trace(m_prerender);
 }
 
 }