[CSS Grid Layout] Support for justify-items property.

Source/core/rendering/style/RenderStyle.h

Index: Source/core/rendering/style/RenderStyle.h
diff --git a/Source/core/rendering/style/RenderStyle.h b/Source/core/rendering/style/RenderStyle.h
index 1d5ca7e71b8345a8d56eb18768c4436cbbcfdbe7..d7553ac6c80ac680b4658d5325809126a2bf0f66 100644
--- a/Source/core/rendering/style/RenderStyle.h
+++ b/Source/core/rendering/style/RenderStyle.h
@@ -1618,8 +1618,8 @@ public:
     static EFlexWrap initialFlexWrap() { return FlexNoWrap; }
     static EJustifyContent initialJustifyContent() { return JustifyFlexStart; }
     static ItemPosition initialJustifyItems() { return ItemPositionAuto; }
-    static OverflowAlignment initialJustifyItemsOverflowAlignment() { return OverflowAlignmentDefault; }
     static ItemPositionType initialJustifyItemsPositionType() { return NonLegacyPosition; }
+    static OverflowAlignment initialJustifyItemsOverflowAlignment() { return OverflowAlignmentDefault; }

[Julien - ping for review, 2014/08/22 21:22:15]

Again why is that change better than the existing code? (I would argue the other
way FWIW)

If we don't have a strong reason for the change, it scrambles the history for no
good reason.

[jfernandez, 2014/08/26 11:23:14]

Acknowledged.

     static ItemPosition initialJustifySelf() { return ItemPositionAuto; }
     static OverflowAlignment initialJustifySelfOverflowAlignment() { return OverflowAlignmentDefault; }
     static int initialMarqueeLoopCount() { return -1; }