Fix virtual/override/final usage in Source/modules/.

Source/modules/netinfo/NetworkInformation.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NetworkInformation_h
 #define NetworkInformation_h
 
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
 #include "core/page/NetworkStateNotifier.h"
 #include "public/platform/WebConnectionType.h"
 
 namespace blink {
 
 class ExecutionContext;
 
 class NetworkInformation final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<NetworkInformation>
     , public ActiveDOMObject
     , public NetworkStateNotifier::NetworkStateObserver {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(NetworkInformation);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NetworkInformation);
     DEFINE_WRAPPERTYPEINFO();
 public:
     static NetworkInformation* create(ExecutionContext*);
-    virtual ~NetworkInformation();
+    ~NetworkInformation() override;
 
     String type() const;
 
-    virtual void connectionTypeChange(WebConnectionType) override;
+    void connectionTypeChange(WebConnectionType) override;
 
     // EventTarget overrides.
-    virtual const AtomicString& interfaceName() const override;
-    virtual ExecutionContext* executionContext() const override;
-    virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture = false) override;
-    virtual bool removeEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture = false) override;
-    virtual void removeAllEventListeners() override;
+    const AtomicString& interfaceName() const override;
+    ExecutionContext* executionContext() const override;
+    bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture = false) override;
+    bool removeEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture = false) override;
+    void removeAllEventListeners() override;
 
     // ActiveDOMObject overrides.
-    virtual bool hasPendingActivity() const override;
-    virtual void stop() override;
+    bool hasPendingActivity() const override;
+    void stop() override;
 
     DECLARE_VIRTUAL_TRACE();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(typechange);
 
 private:
     explicit NetworkInformation(ExecutionContext*);
     void startObserving();
     void stopObserving();
 
     // Touched only on context thread.
     WebConnectionType m_type;
 
     // Whether this object is listening for events from NetworkStateNotifier.
     bool m_observing;
 
     // Whether ActiveDOMObject::stop has been called.
     bool m_contextStopped;
 };
 
 } // namespace blink
 
 #endif // NetworkInformation_h