Changed EDisplay to an enum class and renamed its members to be keywords

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility, Inc.  All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 441 matching lines @@
     return select->spatialNavigationFocusedOption() == this;
 }
 
 bool HTMLOptionElement::isDisplayNone() const
 {
     // If m_style is not set, then the node is still unattached.
     // We have to wait till it gets attached to read the display property.
     if (!m_style)
         return false;
 
-    if (m_style->display() != NONE) {
+    if (m_style->display() != EDisplay::None) {
         // We need to check the parent's display property.  Parent's
         // display:none doesn't override children's display properties in
         // ComputedStyle.
         Element* parent = parentElement();
         DCHECK(parent);
         if (isHTMLOptGroupElement(*parent)) {
             const ComputedStyle* parentStyle = parent->computedStyle() ? parent->computedStyle() : parent->ensureComputedStyle();
-            return !parentStyle || parentStyle->display() == NONE;
+            return !parentStyle || parentStyle->display() == EDisplay::None;
         }
     }
-    return m_style->display() == NONE;
+    return m_style->display() == EDisplay::None;
 }
 
 } // namespace blink