Make ELineBreak 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 985 matching lines @@
   }
 
   NOTREACHED();
   return kHyphensManual;
 }
 
 template <>
 inline CSSIdentifierValue::CSSIdentifierValue(LineBreak e)
     : CSSValue(kIdentifierClass) {
   switch (e) {
-    case kLineBreakAuto:
+    case LineBreak::kAuto:
       value_id_ = CSSValueAuto;
       break;
-    case kLineBreakLoose:
+    case LineBreak::kLoose:
       value_id_ = CSSValueLoose;
       break;
-    case kLineBreakNormal:
+    case LineBreak::kNormal:
       value_id_ = CSSValueNormal;
       break;
-    case kLineBreakStrict:
+    case LineBreak::kStrict:
       value_id_ = CSSValueStrict;
       break;
-    case kLineBreakAfterWhiteSpace:
+    case LineBreak::kAfterWhiteSpace:
       value_id_ = CSSValueAfterWhiteSpace;
       break;
   }
 }
 
 template <>
 inline LineBreak CSSIdentifierValue::ConvertTo() const {
   switch (value_id_) {
     case CSSValueAuto:
-      return kLineBreakAuto;
+      return LineBreak::kAuto;
     case CSSValueLoose:
-      return kLineBreakLoose;
+      return LineBreak::kLoose;
     case CSSValueNormal:
-      return kLineBreakNormal;
+      return LineBreak::kNormal;
     case CSSValueStrict:
-      return kLineBreakStrict;
+      return LineBreak::kStrict;
     case CSSValueAfterWhiteSpace:
-      return kLineBreakAfterWhiteSpace;
+      return LineBreak::kAfterWhiteSpace;
     default:
       break;
   }
 
   NOTREACHED();
-  return kLineBreakAuto;
+  return LineBreak::kAuto;
 }
 
 template <>
 inline CSSIdentifierValue::CSSIdentifierValue(EMarginCollapse e)
     : CSSValue(kIdentifierClass) {
   switch (e) {
     case kMarginCollapseCollapse:
       value_id_ = CSSValueCollapse;
       break;
     case kMarginCollapseSeparate:
@@ skipping 2360 matching lines @@
     default:
       break;
   }
   NOTREACHED();
   return kContainsNone;
 }
 
 }  // namespace blink
 
 #endif