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

third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp

 /*
  * Copyright (C) 2008, 2009 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 220 matching lines @@
     return PseudoIdScrollbar;
 }
 
 void LayoutScrollbar::updateScrollbarPart(ScrollbarPart partType, bool destroy)
 {
     if (partType == NoPart)
         return;
 
     RefPtr<ComputedStyle> partStyle = !destroy ? getScrollbarPseudoStyle(partType,  pseudoForScrollbarPart(partType)) : PassRefPtr<ComputedStyle>(nullptr);
 
-    bool needLayoutObject = !destroy && partStyle && partStyle->display() != NONE;
+    bool needLayoutObject = !destroy && partStyle && partStyle->display() != EDisplay::None;
 
-    if (needLayoutObject && partStyle->display() != BLOCK) {
+    if (needLayoutObject && partStyle->display() != EDisplay::Block) {
         // See if we are a button that should not be visible according to OS settings.
         WebScrollbarButtonsPlacement buttonsPlacement = theme().buttonsPlacement();
         switch (partType) {
         case BackButtonStartPart:
             needLayoutObject = (buttonsPlacement == WebScrollbarButtonsPlacementSingle || buttonsPlacement == WebScrollbarButtonsPlacementDoubleStart
                 || buttonsPlacement == WebScrollbarButtonsPlacementDoubleBoth);
             break;
         case ForwardButtonStartPart:
             needLayoutObject = (buttonsPlacement == WebScrollbarButtonsPlacementDoubleStart || buttonsPlacement == WebScrollbarButtonsPlacementDoubleBoth);
             break;
@@ skipping 108 matching lines @@
     return (orientation() == HorizontalScrollbar ? partLayoutObject->size().width() : partLayoutObject->size().height()).toInt();
 }
 
 void LayoutScrollbar::invalidateDisplayItemClientsOfScrollbarParts()
 {
     for (auto& part : m_parts)
         ObjectPaintInvalidator(*part.value).invalidateDisplayItemClientsIncludingNonCompositingDescendants(PaintInvalidationScroll);
 }
 
 } // namespace blink