Cleanups to viewport-handling and image invalidation in LayoutSVGImage

Source/core/layout/svg/LayoutSVGImage.h

Index: Source/core/layout/svg/LayoutSVGImage.h
diff --git a/Source/core/layout/svg/LayoutSVGImage.h b/Source/core/layout/svg/LayoutSVGImage.h
index bb328e1f0fcf1eb375cdcaa96abd06584ffd1e13..700cc242d2040bc7d7803eec7442aff83f79fa99 100644
--- a/Source/core/layout/svg/LayoutSVGImage.h
+++ b/Source/core/layout/svg/LayoutSVGImage.h
@@ -38,7 +38,6 @@ public:
     explicit LayoutSVGImage(SVGImageElement*);
     virtual ~LayoutSVGImage();
 
-    bool updateImageViewport();
     virtual void setNeedsBoundariesUpdate() override { m_needsBoundariesUpdate = true; }
     virtual void setNeedsTransformUpdate() override { m_needsTransformUpdate = true; }
 
@@ -65,6 +64,8 @@ private:
     virtual void layout() override;
     virtual void paint(const PaintInfo&, const LayoutPoint&) override;
 
+    void updateBoundingBox();
+    void updateImageContainerSize();
     FloatSize computeImageViewportSize(ImageResource&) const;
 
     virtual bool nodeAtFloatPoint(HitTestResult&, const FloatPoint& pointInParent, HitTestAction) override;