Fix virtual/override/final usage in Source/core/{fetch,loader,streams,xmlhttprequest}/.

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 22 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class Document;
 class TextTrackLoader;
 
 class TextTrackLoaderClient : public ResourceOwner<RawResource> {
 public:
-    virtual ~TextTrackLoaderClient() { }
+    ~TextTrackLoaderClient() override {}
 
     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);
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(TextTrackLoader);
 public:
     static PassOwnPtrWillBeRawPtr<TextTrackLoader> create(TextTrackLoaderClient& client, Document& document)
     {
         return adoptPtrWillBeNoop(new TextTrackLoader(client, document));
     }
-    virtual ~TextTrackLoader();
+    ~TextTrackLoader() override;
 
     bool load(const KURL&, const AtomicString& crossOriginMode);
     void cancelLoad();
 
     enum State { Idle, Loading, Finished, Failed };
     State loadState() { return m_state; }
 
     void getNewCues(WillBeHeapVector<RefPtrWillBeMember<TextTrackCue>>& outputCues);
     void getNewRegions(WillBeHeapVector<RefPtrWillBeMember<VTTRegion>>& outputRegions);
 
     DECLARE_TRACE();
 
 private:
     // RawResourceClient
-    virtual void dataReceived(Resource*, const char* data, unsigned length) override;
-    virtual void notifyFinished(Resource*) override;
+    void dataReceived(Resource*, const char* data, unsigned length) override;
+    void notifyFinished(Resource*) override;
 
     // VTTParserClient
-    virtual void newCuesParsed() override;
-    virtual void newRegionsParsed() override;
-    virtual void fileFailedToParse() override;
+    void newCuesParsed() override;
+    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;
     OwnPtrWillBeMember<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