1 files changed, 11 insertions, 3 deletions
diff --git a/WebCore/rendering/RenderSVGRoot.h b/WebCore/rendering/RenderSVGRoot.h
index b90113c..63a7b3f 100644
--- a/WebCore/rendering/RenderSVGRoot.h
+++ b/WebCore/rendering/RenderSVGRoot.h
@@ -41,6 +41,8 @@ public:
     RenderObjectChildList* children() { return &m_children; }
 
     bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
+    virtual void setNeedsBoundariesUpdate() { m_needsBoundariesOrTransformUpdate = true; }
+    virtual void setNeedsTransformUpdate() { m_needsBoundariesOrTransformUpdate = true; }
 
 private:
     virtual RenderObjectChildList* virtualChildren() { return children(); }
@@ -58,6 +60,7 @@ private:
     virtual void paint(PaintInfo&, int parentX, int parentY);
 
     virtual void destroy();
+    virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle);
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     virtual void updateFromElement();
 
@@ -66,9 +69,9 @@ private:
     bool fillContains(const FloatPoint&) const;
     bool strokeContains(const FloatPoint&) const;
 
-    virtual FloatRect objectBoundingBox() const;
-    virtual FloatRect strokeBoundingBox() const;
-    virtual FloatRect repaintRectInLocalCoordinates() const;
+    virtual FloatRect objectBoundingBox() const { return m_objectBoundingBox; }
+    virtual FloatRect strokeBoundingBox() const { return m_strokeBoundingBox; }
+    virtual FloatRect repaintRectInLocalCoordinates() const { return m_repaintBoundingBox; }
 
     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
 
@@ -80,6 +83,7 @@ private:
     void calcViewport();
 
     bool selfWillPaint();
+    void updateCachedBoundaries();
 
     IntSize parentOriginToBorderBox() const;
     IntSize borderOriginToContentBox() const;
@@ -88,8 +92,12 @@ private:
 
     RenderObjectChildList m_children;
     FloatSize m_viewportSize;
+    FloatRect m_objectBoundingBox;
+    FloatRect m_strokeBoundingBox;
+    FloatRect m_repaintBoundingBox;
     mutable AffineTransform m_localToParentTransform;
     bool m_isLayoutSizeChanged : 1;
+    bool m_needsBoundariesOrTransformUpdate : 1;
 };
 
 inline RenderSVGRoot* toRenderSVGRoot(RenderObject* object)