Add ReferrerPolicy support to preload

third_party/WebKit/Source/core/loader/LinkLoader.h

 /*
  * 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 63 matching lines @@
   void didSendDOMContentLoadedForPrerender() override;
 
   void triggerEvents(const Resource*);
 
   void released();
   bool loadLink(const LinkRelAttribute&,
                 CrossOriginAttributeValue,
                 const String& type,
                 const String& as,
                 const String& media,
+                const String& referrerPolicy,
                 const KURL&,
                 Document&,
                 const NetworkHintsInterface&);
   enum CanLoadResources {
     OnlyLoadResources,
     DoNotLoadResources,
     LoadResourcesAndPreconnect
   };
   // Media links cannot be preloaded until the first chunk is parsed. The rest
   // can be preloaded at commit time.
@@ skipping 21 matching lines @@
   Timer<LinkLoader> m_linkLoadTimer;
   Timer<LinkLoader> m_linkLoadingErrorTimer;
 
   Member<PrerenderHandle> m_prerender;
   Member<LinkPreloadResourceClient> m_linkPreloadResourceClient;
 };
 
 }  // namespace blink
 
 #endif