Implement CSS: scroll-boundary-behavior

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

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index 7ec9c51f4b883e324eb9c95b7648f71c4b11c2e2..8a56c28376fcd49cf2c85d194e4a207b4f3376a5 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -1613,6 +1613,18 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
     SET_VAR(m_rareNonInheritedData, m_scrollSnapType, b);
   }
 
+  // scroll-boundary-behavior
+  static ScrollBoundaryBehavior initialScrollBoundaryBehavior() {
+    return ScrollBoundaryBehaviorPropagate;
+  }
+  ScrollBoundaryBehavior getScrollBoundaryBehavior() const {
+    return static_cast<ScrollBoundaryBehavior>(
+        m_rareNonInheritedData->m_scrollBoundaryBehavior);
+  }
+  void setScrollBoundaryBehavior(ScrollBoundaryBehavior b) {
+    SET_VAR(m_rareNonInheritedData, m_scrollBoundaryBehavior, b);
+  }
+
   // shape-image-threshold (aka -webkit-shape-image-threshold)
   static float initialShapeImageThreshold() { return 0; }
   float shapeImageThreshold() const {