Remove -webkit-column-progression and -webkit-column-axis properties.

Source/core/rendering/RenderBox.cpp

Index: Source/core/rendering/RenderBox.cpp
diff --git a/Source/core/rendering/RenderBox.cpp b/Source/core/rendering/RenderBox.cpp
index d3b5e1fbda84ec716b46b55258130dfe6e50614f..a8a07a2b122f144182fc8b3b0148e68ed9d0c909 100644
--- a/Source/core/rendering/RenderBox.cpp
+++ b/Source/core/rendering/RenderBox.cpp
@@ -4234,13 +4234,6 @@ void RenderBox::addLayoutOverflow(const LayoutRect& rect)
                 hasTopOverflow = true;
         }
 
-        if (hasColumns() && style()->columnProgression() == ReverseColumnProgression) {
-            if (isHorizontalWritingMode() ^ !style()->hasInlineColumnAxis())
-                hasLeftOverflow = !hasLeftOverflow;
-            else
-                hasTopOverflow = !hasTopOverflow;
-        }
-
         if (!hasTopOverflow)
             overflowRect.shiftYEdgeTo(max(overflowRect.y(), clientBox.y()));
         else