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

third_party/WebKit/Source/core/html/HTMLLabelElement.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.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 51 matching lines @@
     InsertionNotificationRequest insertedInto(ContainerNode*) override;
     void removedFrom(ContainerNode*) override;
 
     // Overridden to update the hover/active state of the corresponding control.
     void setActive(bool = true) override;
     void setHovered(bool = true) override;
 
     // Overridden to either click() or focus() the corresponding control.
     void defaultEventHandler(Event*) override;
 
-    void focus(bool restorePreviousSelection, WebFocusType, InputDeviceCapabilities* sourceCapabilities) override;
+    void focus(const FocusParams&) override;
 
     // FormAssociatedElement methods
     bool isFormControlElement() const override { return false; }
     bool isEnumeratable() const override { return false; }
     bool isLabelElement() const override { return true; }
 #if !ENABLE(OILPAN)
     void refFormAssociatedElement() override { ref(); }
     void derefFormAssociatedElement() override { deref(); }
 #endif
 
@@ skipping 20 matching lines @@
 {
     const HTMLLabelElement& labelElement = static_cast<const HTMLLabelElement&>(element);
     // FormAssociatedElement doesn't have hasTagName, hence check for assert.
     ASSERT_WITH_SECURITY_IMPLICATION(labelElement.hasTagName(HTMLNames::labelTag));
     return labelElement;
 }
 
 } // namespace blink
 
 #endif // HTMLLabelElement_h