Fix virtual/override/final usage in the rest of Source/core/.

Source/core/inspector/AsyncCallTracker.h

 /*
  * Copyright (C) 2013 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 40 matching lines @@
 class KURL;
 class MutationObserver;
 class ThreadableLoaderClient;
 class XMLHttpRequest;
 
 class CORE_EXPORT AsyncCallTracker final : public NoBaseWillBeGarbageCollectedFinalized<AsyncCallTracker>, public InspectorDebuggerAgent::AsyncCallTrackingListener {
     WTF_MAKE_NONCOPYABLE(AsyncCallTracker);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(AsyncCallTracker);
 public:
     AsyncCallTracker(InspectorDebuggerAgent*, InstrumentingAgents*);
-    virtual ~AsyncCallTracker();
+    ~AsyncCallTracker() override;
 
     // InspectorDebuggerAgent::AsyncCallTrackingListener implementation:
     void asyncCallTrackingStateChanged(bool tracking) override;
     void resetAsyncOperations() override;
 
     void didInstallTimer(ExecutionContext*, int timerId, int timeout, bool singleShot);
     void didRemoveTimer(ExecutionContext*, int timerId);
     bool willFireTimer(ExecutionContext*, int timerId);
     void didFireTimer() { didFireAsyncCall(); }
 
@@ skipping 41 matching lines @@
 
     using ExecutionContextDataMap = WillBeHeapHashMap<RawPtrWillBeMember<ExecutionContext>, OwnPtrWillBeMember<ExecutionContextData>>;
     ExecutionContextDataMap m_executionContextDataMap;
     RawPtrWillBeMember<InspectorDebuggerAgent> m_debuggerAgent;
     RawPtrWillBeMember<InstrumentingAgents> m_instrumentingAgents;
 };
 
 } // namespace blink
 
 #endif // AsyncCallTracker_h