Fix virtual/override/final usage in Source/core/html/.

Source/core/html/shadow/PickerIndicatorElement.h

 /*
  * Copyright (C) 2012 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 38 matching lines @@
         virtual ~PickerIndicatorOwner() { }
         virtual bool isPickerIndicatorOwnerDisabledOrReadOnly() const = 0;
         // FIXME: Remove. Deprecated in favor of double version.
         virtual void pickerIndicatorChooseValue(const String&) = 0;
         virtual void pickerIndicatorChooseValue(double) = 0;
         virtual Element& pickerOwnerElement() const = 0;
         virtual bool setupDateTimeChooserParameters(DateTimeChooserParameters&) = 0;
     };
 
     static PassRefPtrWillBeRawPtr<PickerIndicatorElement> create(Document&, PickerIndicatorOwner&);
-    virtual ~PickerIndicatorElement();
+    ~PickerIndicatorElement() override;
     DECLARE_VIRTUAL_TRACE();
 
     void openPopup();
     void closePopup();
-    virtual bool willRespondToMouseClickEvents() override;
+    bool willRespondToMouseClickEvents() override;
     void removePickerIndicatorOwner() { m_pickerIndicatorOwner = nullptr; }
     AXObject* popupRootAXObject() const;
 
     // DateTimeChooserClient implementation.
-    virtual Element& ownerElement() const override;
-    virtual void didChooseValue(const String&) override;
-    virtual void didChooseValue(double) override;
-    virtual void didEndChooser() override;
+    Element& ownerElement() const override;
+    void didChooseValue(const String&) override;
+    void didChooseValue(double) override;
+    void didEndChooser() override;
 
 private:
     PickerIndicatorElement(Document&, PickerIndicatorOwner&);
-    virtual LayoutObject* createLayoutObject(const ComputedStyle&) override;
-    virtual void defaultEventHandler(Event*) override;
-    virtual void detach(const AttachContext& = AttachContext()) override;
-    virtual bool isPickerIndicatorElement() const override;
-    virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
-    virtual void didNotifySubtreeInsertionsToDocument() override;
+    LayoutObject* createLayoutObject(const ComputedStyle&) override;
+    void defaultEventHandler(Event*) override;
+    void detach(const AttachContext& = AttachContext()) override;
+    bool isPickerIndicatorElement() const override;
+    InsertionNotificationRequest insertedInto(ContainerNode*) override;
+    void didNotifySubtreeInsertionsToDocument() override;
 
     HTMLInputElement* hostInput();
 
     RawPtrWillBeMember<PickerIndicatorOwner> m_pickerIndicatorOwner;
     RefPtr<DateTimeChooser> m_chooser;
 };
 
 DEFINE_TYPE_CASTS(PickerIndicatorElement, Element, element, element->isPickerIndicatorElement(), element.isPickerIndicatorElement());
 
 }
 #endif
 #endif