Changed EListStylePosition to an enum class and renamed its members to keywords

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

Index: third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h
diff --git a/third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h b/third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h
index d9d73070613a0457d0fc82ca8452d79ee5ac9beb..a254eed079aac705a5307fb046e35e0f98384306 100644
--- a/third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h
+++ b/third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h
@@ -1425,10 +1425,10 @@ template <>
 inline CSSIdentifierValue::CSSIdentifierValue(EListStylePosition e)
     : CSSValue(IdentifierClass) {
   switch (e) {
-    case ListStylePositionOutside:
+    case EListStylePosition::Outside:
       m_valueID = CSSValueOutside;
       break;
-    case ListStylePositionInside:
+    case EListStylePosition::Inside:
       m_valueID = CSSValueInside;
       break;
   }
@@ -1438,15 +1438,15 @@ template <>
 inline EListStylePosition CSSIdentifierValue::convertTo() const {
   switch (m_valueID) {
     case CSSValueOutside:
-      return ListStylePositionOutside;
+      return EListStylePosition::Outside;
     case CSSValueInside:
-      return ListStylePositionInside;
+      return EListStylePosition::Inside;
     default:
       break;
   }
 
   ASSERT_NOT_REACHED();
-  return ListStylePositionOutside;
+  return EListStylePosition::Outside;
 }
 
 template <>