Converge <link rel=preload> loading logic with preloadScanner

third_party/WebKit/Source/core/fetch/ResourceFetcher.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     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.
@@ skipping 132 matching lines @@
     String getCacheIdentifier() const;
 
     void scheduleDocumentResourcesGC();
     bool clientDefersImage(const KURL&) const;
     void determineRequestContext(ResourceRequest&, Resource::Type);
 
     WebTaskRunner* loadingTaskRunner();
 
     void updateAllImageResourcePriorities();
 
+    // This is only exposed for testing purposes.
+    WillBeHeapListHashSet<RawPtrWillBeMember<Resource>>* preloads() { return m_preloads.get(); }
+
 private:
     friend class ResourceCacheValidationSuppressor;
 
     explicit ResourceFetcher(FetchContext*);
 
     void initializeRevalidation(const FetchRequest&, Resource*);
     ResourcePtr<Resource> createResourceForLoading(FetchRequest&, const String& charset, const ResourceFactory&);
     void storeResourceTimingInitiatorInformation(Resource*);
     bool scheduleArchiveLoad(Resource*, const ResourceRequest&);
     void preCacheData(const FetchRequest&, const ResourceFactory&, const SubstituteData&);
@@ skipping 82 matching lines @@
             m_loader->m_allowStaleResources = m_previousState;
     }
 private:
     Member<ResourceFetcher> m_loader;
     bool m_previousState;
 };
 
 } // namespace blink
 
 #endif // ResourceFetcher_h