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

Source/modules/screen_orientation/ScreenOrientationInspectorAgent.h

 // Copyright 2015 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 ScreenOrientationInspectorAgent_h
 #define ScreenOrientationInspectorAgent_h
 
 #include "core/InspectorFrontend.h"
 #include "core/inspector/InspectorBaseAgent.h"
 #include "modules/ModulesExport.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ScreenOrientationController;
 
 typedef String ErrorString;
 
 class MODULES_EXPORT ScreenOrientationInspectorAgent final : public InspectorBaseAgent<ScreenOrientationInspectorAgent, InspectorFrontend::ScreenOrientation>, public InspectorBackendDispatcher::ScreenOrientationCommandHandler {
     WTF_MAKE_NONCOPYABLE(ScreenOrientationInspectorAgent);
 public:
     static PassOwnPtrWillBeRawPtr<ScreenOrientationInspectorAgent> create(LocalFrame&);
 
-    virtual ~ScreenOrientationInspectorAgent();
+    ~ScreenOrientationInspectorAgent() override;
 
     // Protocol methods.
-    virtual void setScreenOrientationOverride(ErrorString*, int, const String&) override;
-    virtual void clearScreenOrientationOverride(ErrorString*) override;
+    void setScreenOrientationOverride(ErrorString*, int, const String&) override;
+    void clearScreenOrientationOverride(ErrorString*) override;
 
     // InspectorBaseAgent overrides.
     void disable(ErrorString*) override;
     void restore() override;
 
 private:
     explicit ScreenOrientationInspectorAgent(LocalFrame&);
     LocalFrame& m_frame;
 };
 
 } // namespace blink
 
 
 #endif // !defined(ScreenOrientationInspectorAgent_h)