Changed ComputedStyle's EVisibility to be an enum class and fixed naming

third_party/WebKit/Source/core/html/HTMLAreaElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2009, 2011 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 181 matching lines @@
 }
 
 bool HTMLAreaElement::isMouseFocusable() const
 {
     return isFocusable();
 }
 
 bool HTMLAreaElement::layoutObjectIsFocusable() const
 {
     HTMLImageElement* image = imageElement();
-    if (!image || !image->layoutObject() || image->layoutObject()->style()->visibility() != VISIBLE)
+    if (!image || !image->layoutObject() || image->layoutObject()->style()->visibility() != EVisibility::Visible)
         return false;
 
     return supportsFocus() && Element::tabIndex() >= 0;
 }
 
 void HTMLAreaElement::setFocus(bool shouldBeFocused)
 {
     if (focused() == shouldBeFocused)
         return;
 
@@ skipping 14 matching lines @@
 {
     document().updateStyleAndLayoutTreeForNode(this);
     if (!isFocusable())
         return;
 
     if (HTMLImageElement* imageElement = this->imageElement())
         imageElement->updateFocusAppearance(selectionBehavior);
 }
 
 } // namespace blink