TextTrackLoaderClient should not be a ResourceOwner.

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 20 matching lines @@
 #include "core/html/track/vtt/VTTParser.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class Document;
 class TextTrackLoader;
 
-class TextTrackLoaderClient : public ResourceOwner<RawResource> {
+class TextTrackLoaderClient {
 public:
-    ~TextTrackLoaderClient() override {}
+    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);
 public:
@@ skipping 37 matching lines @@
     // 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