Refactor determineRequestContext() to remove a mutableResourceRequest() call

third_party/WebKit/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 299 matching lines @@
     return nullptr;
   }
 
   if (!isSupportedType(resourceType.value(), mimeType)) {
     document.addConsoleMessage(ConsoleMessage::create(
         OtherMessageSource, WarningMessageLevel,
         String("<link rel=preload> has an unsupported `type` value")));
     return nullptr;
   }
   ResourceRequest resourceRequest(document.completeURL(href));
-  ResourceFetcher::determineRequestContext(resourceRequest,
-                                           resourceType.value(), false);
+  resourceRequest.setRequestContext(
+      ResourceFetcher::determineRequestContext(resourceType.value(), false));
 
   if (referrerPolicy != ReferrerPolicyDefault) {
     resourceRequest.setHTTPReferrer(SecurityPolicy::generateReferrer(
         referrerPolicy, href, document.outgoingReferrer()));
   }
 
   FetchRequest linkRequest(resourceRequest, FetchInitiatorTypeNames::link,
                            document.encodingName());
 
   if (crossOrigin != CrossOriginAttributeNotSet) {
@@ skipping 155 matching lines @@
 
 DEFINE_TRACE(LinkLoader) {
   visitor->trace(m_client);
   visitor->trace(m_prerender);
   visitor->trace(m_linkPreloadResourceClient);
   ResourceOwner<Resource, ResourceClient>::trace(visitor);
   PrerenderClient::trace(visitor);
 }
 
 }  // namespace blink