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

third_party/WebKit/Source/modules/accessibility/AXObject.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 757 matching lines @@
         return getLayoutObject()->style()->visibility() != EVisibility::Visible;
 
     // This is an obscure corner case: if a node has no LayoutObject, that means it's not rendered,
     // but we still may be exploring it as part of a text alternative calculation, for example if it
     // was explicitly referenced by aria-labelledby. So we need to explicitly call the style resolver
     // to check whether it's invisible or display:none, rather than relying on the style cached in the
     // LayoutObject.
     Document* doc = getDocument();
     if (doc && doc->frame() && getNode() && getNode()->isElementNode()) {
         RefPtr<ComputedStyle> style = doc->ensureStyleResolver().styleForElement(toElement(getNode()));
-        return style->display() == NONE || style->visibility() != EVisibility::Visible;
+        return style->display() == EDisplay::None || style->visibility() != EVisibility::Visible;
     }
 
     return false;
 }
 
 String AXObject::ariaTextAlternative(bool recursive, bool inAriaLabelledByTraversal, AXObjectSet& visited, AXNameFrom& nameFrom, AXRelatedObjectVector* relatedObjects, NameSources* nameSources, bool* foundTextAlternative) const
 {
     String textAlternative;
     bool alreadyVisited = visited.contains(this);
     visited.add(this);
@@ skipping 1007 matching lines @@
 
 DEFINE_TRACE(AXObject)
 {
     visitor->trace(m_children);
     visitor->trace(m_parent);
     visitor->trace(m_cachedLiveRegionRoot);
     visitor->trace(m_axObjectCache);
 }
 
 } // namespace blink