Reduce how often LayoutSVGShape::updateShapeFromElement is called

Source/core/layout/svg/LayoutSVGEllipse.h

Index: Source/core/layout/svg/LayoutSVGEllipse.h
diff --git a/Source/core/layout/svg/LayoutSVGEllipse.h b/Source/core/layout/svg/LayoutSVGEllipse.h
index 2b0377bb667346e7f35b27ba5f846dc133889baa..96a5f746f347ea4900c26198c9cf122920e9363c 100644
--- a/Source/core/layout/svg/LayoutSVGEllipse.h
+++ b/Source/core/layout/svg/LayoutSVGEllipse.h
@@ -41,12 +41,14 @@ public:
     virtual const char* name() const override { return "LayoutSVGEllipse"; }
 
 private:
-    virtual void updateShapeFromElement() override;
+    void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
+    void updateShapeFromElement() override;
+    void updateStrokeAndFillBoundingBoxes() override;
     virtual bool isShapeEmpty() const override { return m_usePathFallback ? LayoutSVGShape::isShapeEmpty() : m_fillBoundingBox.isEmpty(); }
     virtual bool shapeDependentStrokeContains(const FloatPoint&) override;
     virtual bool shapeDependentFillContains(const FloatPoint&, const WindRule) const override;
     void calculateRadiiAndCenter();
-    bool hasContinuousStroke() const;
+    bool hasContinuousStroke(const SVGComputedStyle&) const;
 
 private:
     FloatPoint m_center;