Optimize for horizontal writing mode

Source/core/rendering/RenderListMarker.cpp

Index: Source/core/rendering/RenderListMarker.cpp
diff --git a/Source/core/rendering/RenderListMarker.cpp b/Source/core/rendering/RenderListMarker.cpp
index 5fff3b3eadd3a1ea32e9421064e2ddfe65a048b8..79333f5b9ddeb833f895f90618db5b26dcb60863 100644
--- a/Source/core/rendering/RenderListMarker.cpp
+++ b/Source/core/rendering/RenderListMarker.cpp
@@ -1120,7 +1120,7 @@ LayoutRect RenderListMarker::localSelectionRect()
     if (!box)
         return LayoutRect(LayoutPoint(), size());
     RootInlineBox& root = inlineBoxWrapper()->root();
-    LayoutUnit newLogicalTop = root.block().style()->isFlippedBlocksWritingMode() ? inlineBoxWrapper()->logicalBottom() - root.selectionBottom() : root.selectionTop() - inlineBoxWrapper()->logicalTop();
+    LayoutUnit newLogicalTop = root.block().style()->slowIsFlippedBlocksWritingMode() ? inlineBoxWrapper()->logicalBottom() - root.selectionBottom() : root.selectionTop() - inlineBoxWrapper()->logicalTop();
     if (root.block().style()->isHorizontalWritingMode())
         return LayoutRect(0, newLogicalTop, width(), root.selectionHeight());
     return LayoutRect(newLogicalTop, 0, root.selectionHeight(), height());