| Index: Source/core/css/CSSPrimitiveValueMappings.h | 
| diff --git a/Source/core/css/CSSPrimitiveValueMappings.h b/Source/core/css/CSSPrimitiveValueMappings.h | 
| index 1cc0f924c9a65efe682ae43ebe772961957db168..fe53ecc2dacd7171213be9f47b8676088ffaa1d9 100644 | 
| --- a/Source/core/css/CSSPrimitiveValueMappings.h | 
| +++ b/Source/core/css/CSSPrimitiveValueMappings.h | 
| @@ -4647,6 +4647,9 @@ template<> inline CSSPrimitiveValue::CSSPrimitiveValue(ItemPosition itemPosition | 
| case ItemPositionBaseline: | 
| m_value.valueID = CSSValueBaseline; | 
| break; | 
| +    case ItemPositionLastBaseline: | 
| +        m_value.valueID = CSSValueLastBaseline; | 
| +        break; | 
| case ItemPositionCenter: | 
| m_value.valueID = CSSValueCenter; | 
| break; | 
| @@ -4686,6 +4689,8 @@ template<> inline CSSPrimitiveValue::operator ItemPosition() const | 
| return ItemPositionStretch; | 
| case CSSValueBaseline: | 
| return ItemPositionBaseline; | 
| +    case CSSValueLastBaseline: | 
| +        return ItemPositionLastBaseline; | 
| case CSSValueCenter: | 
| return ItemPositionCenter; | 
| case CSSValueStart: | 
|  |