Move ResourceOwner on to the oilpan heap.

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 32 matching lines @@
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class Document;
 class LinkRelAttribute;
 class NetworkHintsInterface;
 class PrerenderHandle;
 
 // The LinkLoader can load link rel types icon, dns-prefetch, subresource, prefetch and prerender.
-class CORE_EXPORT LinkLoader final : public ResourceOwner<Resource, ResourceClient>, public PrerenderClient {
-    DISALLOW_NEW();
+class CORE_EXPORT LinkLoader final : public NoBaseWillBeGarbageCollectedFinalized<LinkLoader>, public ResourceOwner<Resource, ResourceClient>, public PrerenderClient {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LinkLoader);
 public:
-    explicit LinkLoader(LinkLoaderClient*);
+    static PassOwnPtrWillBeRawPtr<LinkLoader> create(LinkLoaderClient* client)
+    {
+        return adoptPtrWillBeNoop(new LinkLoader(client));
+    }
     ~LinkLoader() override;
 
     // from ResourceClient
     void notifyFinished(Resource*) override;
     String debugName() const override { return "LinkLoader"; }
 
     // from PrerenderClient
     void didStartPrerender() override;
     void didStopPrerender() override;
     void didSendLoadForPrerender() override;
     void didSendDOMContentLoadedForPrerender() override;
 
     void released();
     bool loadLink(const LinkRelAttribute&, CrossOriginAttributeValue, const String& type, const String& as, const KURL&, Document&, const NetworkHintsInterface&);
     enum CanLoadResources { LoadResources, DoNotLoadResources };
     static bool loadLinkFromHeader(const String& headerValue, Document*, const NetworkHintsInterface&, CanLoadResources);
 
     DECLARE_TRACE();
 
 private:
+    explicit LinkLoader(LinkLoaderClient*);
+
     void linkLoadTimerFired(Timer<LinkLoader>*);
     void linkLoadingErrorTimerFired(Timer<LinkLoader>*);
 
     LinkLoaderClient* m_client;

[haraken, 2016/01/12 00:22:52]

It would be better to make LinkLoaderClient a GCMixin. Then you can use a Member
here. (You don't need to address it in this CL.)

 
     Timer<LinkLoader> m_linkLoadTimer;
     Timer<LinkLoader> m_linkLoadingErrorTimer;
 
     OwnPtrWillBeMember<PrerenderHandle> m_prerender;
 };
 
 }
 
 #endif