Make EBorderStyle an enum class.

third_party/WebKit/Source/core/style/StyleMultiColData.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 30 matching lines @@
     return AdoptRef(new StyleMultiColData);
   }
   PassRefPtr<StyleMultiColData> Copy() const {
     return AdoptRef(new StyleMultiColData(*this));
   }
 
   bool operator==(const StyleMultiColData&) const;
   bool operator!=(const StyleMultiColData& o) const { return !(*this == o); }
 
   unsigned short RuleWidth() const {
-    if (rule_.Style() == kBorderStyleNone ||
-        rule_.Style() == kBorderStyleHidden)
+    if (rule_.Style() == EBorderStyle::kNone ||
+        rule_.Style() == EBorderStyle::kHidden)
       return 0;
     return rule_.Width();
   }
 
   float width_;
   unsigned short count_;
   float gap_;
   BorderValue rule_;
   StyleColor visited_link_column_rule_color_;
 
   unsigned auto_width_ : 1;
   unsigned auto_count_ : 1;
   unsigned normal_gap_ : 1;
   unsigned fill_ : 1;  // ColumnFill
   unsigned column_span_ : 1;
 
  private:
   StyleMultiColData();
   StyleMultiColData(const StyleMultiColData&);
 };
 
 }  // namespace blink
 
 #endif  // StyleMultiColData_h