Fix virtual/override/final usage in Source/core/layout/.

Source/core/layout/svg/line/SVGRootInlineBox.h

Index: Source/core/layout/svg/line/SVGRootInlineBox.h
diff --git a/Source/core/layout/svg/line/SVGRootInlineBox.h b/Source/core/layout/svg/line/SVGRootInlineBox.h
index 0ca220721a5907e5a123223d53c55112fe18d60f..72ad47bae3573e9ce686320cd0acae55ca080659 100644
--- a/Source/core/layout/svg/line/SVGRootInlineBox.h
+++ b/Source/core/layout/svg/line/SVGRootInlineBox.h
@@ -36,14 +36,14 @@ public:
     {
     }
 
-    virtual bool isSVGRootInlineBox() const override { return true; }
+    bool isSVGRootInlineBox() const override { return true; }
 
-    virtual LayoutUnit virtualLogicalHeight() const override { return m_logicalHeight; }
+    LayoutUnit virtualLogicalHeight() const override { return m_logicalHeight; }
     void setLogicalHeight(LayoutUnit height) { m_logicalHeight = height; }
 
-    virtual void paint(const PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
+    void paint(const PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
 
-    virtual void markDirty() override;
+    void markDirty() override;
 
     void computePerCharacterLayoutInformation();