Move ResourceOwner on to the oilpan heap.

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

 /*
  * Copyright (C) 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 31 matching lines @@
 class TextTrackLoaderClient {
 public:
     virtual ~TextTrackLoaderClient() {}
 
     virtual void newCuesAvailable(TextTrackLoader*) = 0;
     virtual void cueLoadingCompleted(TextTrackLoader*, bool loadingFailed) = 0;
     virtual void newRegionsAvailable(TextTrackLoader*) = 0;
 };
 
 class TextTrackLoader final : public NoBaseWillBeGarbageCollectedFinalized<TextTrackLoader>, public ResourceOwner<RawResource>, private VTTParserClient {
-    WTF_MAKE_NONCOPYABLE(TextTrackLoader);
     USING_FAST_MALLOC_WILL_BE_REMOVED(TextTrackLoader);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(TextTrackLoader);
 public:
     static PassOwnPtrWillBeRawPtr<TextTrackLoader> create(TextTrackLoaderClient& client, Document& document)
     {
         return adoptPtrWillBeNoop(new TextTrackLoader(client, document));
     }
     ~TextTrackLoader() override;
 
     bool load(const KURL&, CrossOriginAttributeValue);
     void cancelLoad();
 
@@ skipping 16 matching lines @@
     void newRegionsParsed() override;
     void fileFailedToParse() override;
 
     TextTrackLoader(TextTrackLoaderClient&, Document&);
 
     void cueLoadTimerFired(Timer<TextTrackLoader>*);
     void corsPolicyPreventedLoad(SecurityOrigin*, const KURL&);
 
     Document& document() const { return *m_document; }
 
     TextTrackLoaderClient& m_client;

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

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

     PersistentWillBeMember<VTTParser> m_cueParser;
     // FIXME: Remove this pointer and get the Document from m_client.
     RawPtrWillBeMember<Document> m_document;
     Timer<TextTrackLoader> m_cueLoadTimer;
     State m_state;
     bool m_newCuesAvailable;
 };
 
 } // namespace blink
 
 #endif