Make EOverflowWrap an enum class.

third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h

 /*
  * Copyright (C) 2007 Alexey Proskuryakov <ap@nypop.com>.
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 1505 matching lines @@
   }
 
   NOTREACHED();
   return kNormalWordBreak;
 }
 
 template <>
 inline CSSIdentifierValue::CSSIdentifierValue(EOverflowWrap e)
     : CSSValue(kIdentifierClass) {
   switch (e) {
-    case kNormalOverflowWrap:
+    case EOverflowWrap::kNormal:
       value_id_ = CSSValueNormal;
       break;
-    case kBreakOverflowWrap:
+    case EOverflowWrap::kBreakWord:
       value_id_ = CSSValueBreakWord;
       break;
   }
 }
 
 template <>
 inline EOverflowWrap CSSIdentifierValue::ConvertTo() const {
   switch (value_id_) {
     case CSSValueBreakWord:
-      return kBreakOverflowWrap;
+      return EOverflowWrap::kBreakWord;
     case CSSValueNormal:
-      return kNormalOverflowWrap;
+      return EOverflowWrap::kNormal;
     default:
       break;
   }
 
   NOTREACHED();
-  return kNormalOverflowWrap;
+  return EOverflowWrap::kNormal;
 }
 
 template <>
 inline CSSIdentifierValue::CSSIdentifierValue(TextCombine e)
     : CSSValue(kIdentifierClass) {
   switch (e) {
     case kTextCombineNone:
       value_id_ = CSSValueNone;
       break;
     case kTextCombineAll:
@@ skipping 1762 matching lines @@
     default:
       break;
   }
   NOTREACHED();
   return kContainsNone;
 }
 
 }  // namespace blink
 
 #endif