Introduce a struct to store arguments of Element::focus().

third_party/WebKit/Source/core/html/HTMLInputElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 132 matching lines @@
     String selectionDirectionForBinding(ExceptionState&) const;
     void setSelectionStartForBinding(int, ExceptionState&);
     void setSelectionEndForBinding(int, ExceptionState&);
     void setSelectionDirectionForBinding(const String&, ExceptionState&);
     void setSelectionRangeForBinding(int start, int end, ExceptionState&);
     void setSelectionRangeForBinding(int start, int end, const String& direction, ExceptionState&);
 
     bool layoutObjectIsNeeded(const ComputedStyle&) final;
     LayoutObject* createLayoutObject(const ComputedStyle&) override;
     void detach(const AttachContext& = AttachContext()) final;
-    void updateFocusAppearance(bool restorePreviousSelection) final;
+    void updateFocusAppearance(SelectionBehaviorOnFocus) final;
 
     // FIXME: For isActivatedSubmit and setActivatedSubmit, we should use the NVI-idiom here by making
     // it private virtual in all classes and expose a public method in HTMLFormControlElement to call
     // the private virtual method.
     bool isActivatedSubmit() const final;
     void setActivatedSubmit(bool flag) final;
 
     String altText() const final;
 
     int maxResults() const { return m_maxResults; }
@@ skipping 230 matching lines @@
     // The ImageLoader must be owned by this element because the loader code assumes
     // that it lives as long as its owning element lives. If we move the loader into
     // the ImageInput object we may delete the loader while this element lives on.
     OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
     OwnPtrWillBeMember<ListAttributeTargetObserver> m_listAttributeTargetObserver;
 };
 
 } // namespace blink
 
 #endif // HTMLInputElement_h