Make EBorderStyle 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 179 matching lines @@
     // fall-through
     case CSSValueNone:
       return kColumnSpanNone;
   }
 }
 
 template <>
 inline CSSIdentifierValue::CSSIdentifierValue(EBorderStyle e)
     : CSSValue(kIdentifierClass) {
   switch (e) {
-    case kBorderStyleNone:
+    case EBorderStyle::kNone:
       value_id_ = CSSValueNone;
       break;
-    case kBorderStyleHidden:
+    case EBorderStyle::kHidden:
       value_id_ = CSSValueHidden;
       break;
-    case kBorderStyleInset:
+    case EBorderStyle::kInset:
       value_id_ = CSSValueInset;
       break;
-    case kBorderStyleGroove:
+    case EBorderStyle::kGroove:
       value_id_ = CSSValueGroove;
       break;
-    case kBorderStyleRidge:
+    case EBorderStyle::kRidge:
       value_id_ = CSSValueRidge;
       break;
-    case kBorderStyleOutset:
+    case EBorderStyle::kOutset:
       value_id_ = CSSValueOutset;
       break;
-    case kBorderStyleDotted:
+    case EBorderStyle::kDotted:
       value_id_ = CSSValueDotted;
       break;
-    case kBorderStyleDashed:
+    case EBorderStyle::kDashed:
       value_id_ = CSSValueDashed;
       break;
-    case kBorderStyleSolid:
+    case EBorderStyle::kSolid:
       value_id_ = CSSValueSolid;
       break;
-    case kBorderStyleDouble:
+    case EBorderStyle::kDouble:
       value_id_ = CSSValueDouble;
       break;
   }
 }
 
 template <>
 inline EBorderStyle CSSIdentifierValue::ConvertTo() const {
   if (value_id_ == CSSValueAuto)  // Valid for CSS outline-style
-    return kBorderStyleDotted;
+    return EBorderStyle::kDotted;
   return (EBorderStyle)(value_id_ - CSSValueNone);
 }
 
 template <>
 inline OutlineIsAuto CSSIdentifierValue::ConvertTo() const {
   if (value_id_ == CSSValueAuto)
     return kOutlineIsAutoOn;
   return kOutlineIsAutoOff;
 }
 
@@ skipping 3110 matching lines @@
     default:
       break;
   }
   NOTREACHED();
   return kContainsNone;
 }
 
 }  // namespace blink
 
 #endif