Remove writing mode code from the linebox tree.

sky/engine/core/rendering/InlineFlowBox.h

Index: sky/engine/core/rendering/InlineFlowBox.h
diff --git a/sky/engine/core/rendering/InlineFlowBox.h b/sky/engine/core/rendering/InlineFlowBox.h
index e27b0499350ab9a355717eac2ee60273818be8c0..fd2e60754ac30894f39967f606e5d325042efe56 100644
--- a/sky/engine/core/rendering/InlineFlowBox.h
+++ b/sky/engine/core/rendering/InlineFlowBox.h
@@ -129,37 +129,37 @@ public:
     {
         if (!includeLogicalLeftEdge())
             return 0;
-        return isHorizontal() ? boxModelObject()->marginLeft() : boxModelObject()->marginTop();
+        return boxModelObject()->marginLeft();
     }
     LayoutUnit marginLogicalRight() const
     {
         if (!includeLogicalRightEdge())
             return 0;
-        return isHorizontal() ? boxModelObject()->marginRight() : boxModelObject()->marginBottom();
+        return boxModelObject()->marginRight();
     }
     int borderLogicalLeft() const
     {
         if (!includeLogicalLeftEdge())
             return 0;
-        return isHorizontal() ? renderer().style(isFirstLineStyle())->borderLeftWidth() : renderer().style(isFirstLineStyle())->borderTopWidth();
+        return renderer().style(isFirstLineStyle())->borderLeftWidth();
     }
     int borderLogicalRight() const
     {
         if (!includeLogicalRightEdge())
             return 0;
-        return isHorizontal() ? renderer().style(isFirstLineStyle())->borderRightWidth() : renderer().style(isFirstLineStyle())->borderBottomWidth();
+        return renderer().style(isFirstLineStyle())->borderRightWidth();
     }
     int paddingLogicalLeft() const
     {
         if (!includeLogicalLeftEdge())
             return 0;
-        return isHorizontal() ? boxModelObject()->paddingLeft() : boxModelObject()->paddingTop();
+        return boxModelObject()->paddingLeft();
     }
     int paddingLogicalRight() const
     {
         if (!includeLogicalRightEdge())
             return 0;
-        return isHorizontal() ? boxModelObject()->paddingRight() : boxModelObject()->paddingBottom();
+        return boxModelObject()->paddingRight();
     }
 
     bool includeLogicalLeftEdge() const { return m_includeLogicalLeftEdge; }
@@ -192,7 +192,6 @@ public:
     void placeBoxesInBlockDirection(LayoutUnit logicalTop, LayoutUnit maxHeight, int maxAscent, bool strictMode, LayoutUnit& lineTop, LayoutUnit& lineBottom, LayoutUnit& selectionBottom, bool& setLineTop,
                                     LayoutUnit& lineTopIncludingMargins, LayoutUnit& lineBottomIncludingMargins, bool& hasAnnotationsBefore, bool& hasAnnotationsAfter, FontBaseline);
     void flipLinesInBlockDirection(LayoutUnit lineTop, LayoutUnit lineBottom);
-    bool requiresIdeographicBaseline(const GlyphOverflowAndFallbackFontsMap&) const;
 
     LayoutUnit computeOverAnnotationAdjustment(LayoutUnit allowedPosition) const;
     LayoutUnit computeUnderAnnotationAdjustment(LayoutUnit allowedPosition) const;
@@ -251,18 +250,18 @@ public:
     {
         return m_overflow ? m_overflow->visualOverflowRect() : enclosingLayoutRect(frameRectIncludingLineHeight(lineTop, lineBottom));
     }
-    LayoutUnit logicalLeftVisualOverflow() const { return m_overflow ? (isHorizontal() ? m_overflow->visualOverflowRect().x() : m_overflow->visualOverflowRect().y()) : static_cast<LayoutUnit>(logicalLeft()); }
-    LayoutUnit logicalRightVisualOverflow() const { return m_overflow ? (isHorizontal() ? m_overflow->visualOverflowRect().maxX() : m_overflow->visualOverflowRect().maxY()) : static_cast<LayoutUnit>(ceilf(logicalRight())); }
+    LayoutUnit logicalLeftVisualOverflow() const { return m_overflow ? m_overflow->visualOverflowRect().x() : static_cast<LayoutUnit>(logicalLeft()); }
+    LayoutUnit logicalRightVisualOverflow() const { return m_overflow ? m_overflow->visualOverflowRect().maxX() : static_cast<LayoutUnit>(ceilf(logicalRight())); }
     LayoutUnit logicalTopVisualOverflow(LayoutUnit lineTop) const
     {
         if (m_overflow)
-            return isHorizontal() ? m_overflow->visualOverflowRect().y() : m_overflow->visualOverflowRect().x();
+            return m_overflow->visualOverflowRect().y();
         return lineTop;
     }
     LayoutUnit logicalBottomVisualOverflow(LayoutUnit lineBottom) const
     {
         if (m_overflow)
-            return isHorizontal() ? m_overflow->visualOverflowRect().maxY() : m_overflow->visualOverflowRect().maxX();
+            return m_overflow->visualOverflowRect().maxY();
         return lineBottom;
     }
     LayoutRect logicalVisualOverflowRect(LayoutUnit lineTop, LayoutUnit lineBottom) const