[Alignment] Single class for holding the alignment data.

Source/core/layout/LayoutMenuList.cpp

Index: Source/core/layout/LayoutMenuList.cpp
diff --git a/Source/core/layout/LayoutMenuList.cpp b/Source/core/layout/LayoutMenuList.cpp
index 67b0b043eddb8a6a1d6581e092b60d5df63d60a9..da9ce3dba734420dfd5fe566407a4b530226ca7d 100644
--- a/Source/core/layout/LayoutMenuList.cpp
+++ b/Source/core/layout/LayoutMenuList.cpp
@@ -109,7 +109,7 @@ void LayoutMenuList::adjustInnerStyle()
     // Use margin:auto instead of align-items:center to get safe centering, i.e.
     // when the content overflows, treat it the same as align-items: flex-start.
     // But we only do that for the cases where html.css would otherwise use center.
-    if (style()->alignItems() == ItemPositionCenter) {
+    if (style()->alignItemsPosition() == ItemPositionCenter) {
         innerStyle.setMarginTop(Length());
         innerStyle.setMarginBottom(Length());
         innerStyle.setAlignSelf(ItemPositionFlexStart);