Parsing CSS properties for scroll snap points

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
  * are met:
@@ skipping 4701 matching lines @@
         return ScrollBehaviorAuto;
     case CSSValueSmooth:
         return ScrollBehaviorSmooth;
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return ScrollBehaviorAuto;
 }
 
+template<> inline CSSPrimitiveValue::CSSPrimitiveValue(ScrollSnapType snapType)
+    : CSSValue(PrimitiveClass)
+{
+    m_primitiveUnitType = CSS_VALUE_ID;
+    switch (snapType) {
+    case ScrollSnapTypeNone:
+        m_value.valueID = CSSValueNone;
+        break;
+    case ScrollSnapTypeMandatory:
+        m_value.valueID = CSSValueMandatory;
+        break;
+    case ScrollSnapTypeProximity:
+        m_value.valueID = CSSValueProximity;
+        break;
+    }
+}
+
+template<> inline CSSPrimitiveValue::operator ScrollSnapType() const
+{
+    switch (getValueID()) {
+    case CSSValueNone:
+        return ScrollSnapTypeNone;
+    case CSSValueMandatory:
+        return ScrollSnapTypeMandatory;
+    case CSSValueProximity:
+        return ScrollSnapTypeProximity;
+    default:
+        break;
+    }
+    ASSERT_NOT_REACHED();
+    return ScrollSnapTypeNone;
+}
+
 } // namespace blink
 
 #endif