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

Source/modules/device_orientation/DeviceOrientationInspectorAgent.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 DeviceOrientationInspectorAgent_h
 #define DeviceOrientationInspectorAgent_h
 
 #include "core/InspectorFrontend.h"
 #include "core/inspector/InspectorBaseAgent.h"
 #include "modules/ModulesExport.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class DeviceOrientationController;
 class Page;
 
 typedef String ErrorString;
 
 class MODULES_EXPORT DeviceOrientationInspectorAgent final : public InspectorBaseAgent<DeviceOrientationInspectorAgent, InspectorFrontend::DeviceOrientation>, public InspectorBackendDispatcher::DeviceOrientationCommandHandler {
     WTF_MAKE_NONCOPYABLE(DeviceOrientationInspectorAgent);
 public:
     static PassOwnPtrWillBeRawPtr<DeviceOrientationInspectorAgent> create(Page*);
 
-    virtual ~DeviceOrientationInspectorAgent();
+    ~DeviceOrientationInspectorAgent() override;
 
     // Protocol methods.
-    virtual void setDeviceOrientationOverride(ErrorString*, double, double, double) override;
-    virtual void clearDeviceOrientationOverride(ErrorString*) override;
+    void setDeviceOrientationOverride(ErrorString*, double, double, double) override;
+    void clearDeviceOrientationOverride(ErrorString*) override;
 
     // Inspector Controller API.
     void disable(ErrorString*) override;
     void restore() override;
     void didCommitLoadForLocalFrame(LocalFrame*) override;
 
 private:
     explicit DeviceOrientationInspectorAgent(Page&);
     DeviceOrientationController& controller();
     Page& m_page;
 };
 
 } // namespace blink
 
 
 #endif // !defined(DeviceOrientationInspectorAgent_h)