Make Hyphens an enum class.

third_party/WebKit/Source/core/style/ComputedStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 1545 matching lines @@
     case LineBreak::kLoose:
       mode = LineBreakIteratorMode::kLoose;
       break;
   }
   if (const LayoutLocale* locale = GetFontDescription().Locale())
     return locale->LocaleWithBreakKeyword(mode);
   return Locale();
 }
 
 Hyphenation* ComputedStyle::GetHyphenation() const {
-  return GetHyphens() == kHyphensAuto
+  return GetHyphens() == Hyphens::kAuto
              ? GetFontDescription().LocaleOrDefault().GetHyphenation()
              : nullptr;
 }
 
 const AtomicString& ComputedStyle::HyphenString() const {
   const AtomicString& hyphenation_string =
       rare_inherited_data_.Get()->hyphenation_string_;
   if (!hyphenation_string.IsNull())
     return hyphenation_string;
 
@@ skipping 905 matching lines @@
     if (value < 0)
       fvalue -= 0.5f;
     else
       fvalue += 0.5f;
   }
 
   return RoundForImpreciseConversion<int>(fvalue / zoom_factor);
 }
 
 }  // namespace blink