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

Source/core/inspector/InspectorRuntimeAgent.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 40 matching lines @@
     WTF_MAKE_NONCOPYABLE(InspectorRuntimeAgent);
 public:
     class Client {
     public:
         virtual ~Client() { }
 
         virtual void resumeStartup() { }
         virtual bool isRunRequired() { return false; }
     };
 
-    virtual ~InspectorRuntimeAgent();
+    ~InspectorRuntimeAgent() override;
     DECLARE_VIRTUAL_TRACE();
 
     // Part of the protocol.
     void enable(ErrorString*) override;
     void disable(ErrorString*) override;
     void restore() override;
 
     void evaluate(ErrorString*,
         const String& expression,
         const String* objectGroup,
@@ skipping 37 matching lines @@
     class InjectedScriptCallScope;
 
     RawPtrWillBeMember<InjectedScriptManager> m_injectedScriptManager;
     V8Debugger* m_debugger;
     Client* m_client;
 };
 
 } // namespace blink
 
 #endif // InspectorRuntimeAgent_h