Parsing CSS properties for scroll snap points

Source/core/style/StyleRareNonInheritedData.h

Index: Source/core/style/StyleRareNonInheritedData.h
diff --git a/Source/core/style/StyleRareNonInheritedData.h b/Source/core/style/StyleRareNonInheritedData.h
index afff968419e68808902418702559d85c5ced4b53..c6c70a7bc84cb6949e0eec60c95d7f4f922ec1c4 100644
--- a/Source/core/style/StyleRareNonInheritedData.h
+++ b/Source/core/style/StyleRareNonInheritedData.h
@@ -38,6 +38,7 @@
 #include "core/style/NinePieceImage.h"
 #include "core/style/ShapeValue.h"
 #include "core/style/StyleContentAlignmentData.h"
+#include "core/style/StyleScrollSnapData.h"
 #include "core/style/StyleSelfAlignmentData.h"
 #include "platform/LengthPoint.h"
 #include "wtf/OwnPtr.h"
@@ -117,6 +118,7 @@ public:
 
     DataRef<StyleGridData> m_grid;
     DataRef<StyleGridItemData> m_gridItem;
+    DataRef<StyleScrollSnapData> m_scrollSnap;
 
     OwnPtr<ContentData> m_content;
     OwnPtr<CounterDirectiveMap> m_counterDirectives;
@@ -190,6 +192,8 @@ public:
 
     unsigned m_scrollBlocksOn: 3; // WebScrollBlocksOn
 
+    unsigned m_scrollSnapType: 2; // ScrollSnapType
+
     // Plugins require accelerated compositing for reasons external to blink.
     // In which case, we need to update the ComputedStyle on the LayoutEmbeddedObject,
     // so store this bit so that the style actually changes when the plugin