Update the snap points css properties

third_party/WebKit/Source/core/style/StyleScrollSnapData.h

 /*
  * Copyright (C) 2014 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef StyleScrollSnapData_h
 #define StyleScrollSnapData_h
 
-#include "core/style/ScrollSnapPoints.h"
+#include "core/style/ComputedStyleConstants.h"
+#include "core/style/QuadLengthValue.h"
 #include "platform/LengthPoint.h"
 #include "platform/wtf/Allocator.h"
 #include "platform/wtf/RefCounted.h"
 #include "platform/wtf/Vector.h"
 
 namespace blink {
 
+using ScrollPadding = QuadLengthValue;
+using ScrollSnapMargin = QuadLengthValue;
+
+struct ScrollSnapType {
+  DISALLOW_NEW();
+
+  ScrollSnapType()
+      : is_none(true),
+        axis(kSnapAxisBoth),
+        strictness(kSnapStrictnessProximity) {}
+
+  ScrollSnapType(const ScrollSnapType& other)
+      : is_none(other.is_none),
+        axis(other.axis),
+        strictness(other.strictness) {}
+
+  bool operator==(const ScrollSnapType& other) const {
+    return is_none == other.is_none && axis == other.axis &&
+           strictness == other.strictness;
+  }
+
+  bool operator!=(const ScrollSnapType& other) const {
+    return !(*this == other);
+  }
+
+  bool is_none;
+  SnapAxis axis;
+  SnapStrictness strictness;
+};
+
+struct ScrollSnapAlign {
+  DISALLOW_NEW();
+
+  ScrollSnapAlign()
+      : alignmentX(kSnapAlignmentNone), alignmentY(kSnapAlignmentNone) {}
+
+  ScrollSnapAlign(const ScrollSnapAlign& other)
+      : alignmentX(other.alignmentX), alignmentY(other.alignmentY) {}
+
+  bool operator==(const ScrollSnapAlign& other) const {
+    return alignmentX == other.alignmentX && alignmentY == other.alignmentY;
+  }
+
+  bool operator!=(const ScrollSnapAlign& other) const {
+    return !(*this == other);
+  }
+
+  SnapAlignment alignmentX;
+  SnapAlignment alignmentY;
+};
+
 class StyleScrollSnapData : public RefCounted<StyleScrollSnapData> {
  public:
   static PassRefPtr<StyleScrollSnapData> Create() {
     return AdoptRef(new StyleScrollSnapData);
   }
   PassRefPtr<StyleScrollSnapData> Copy() {
     return AdoptRef(new StyleScrollSnapData(*this));
   }
 
-  ScrollSnapPoints x_points_;
-  ScrollSnapPoints y_points_;
-  LengthPoint destination_;
-  Vector<LengthPoint> coordinates_;
+  ScrollSnapType type_;
+  ScrollSnapAlign align_;
+  ScrollPadding padding_;
+  ScrollSnapMargin margin_;
 
  private:
   StyleScrollSnapData();
-  StyleScrollSnapData(const StyleScrollSnapData&);
+  StyleScrollSnapData(const StyleScrollSnapData& other);
 };
 
 bool operator==(const StyleScrollSnapData&, const StyleScrollSnapData&);
 inline bool operator!=(const StyleScrollSnapData& a,
                        const StyleScrollSnapData& b) {
   return !(a == b);
 }
 
 }  // namespace blink
 
 #endif  // StyleScrollSnapData_h