Begin tracking why layout is invalidated

Source/core/layout/svg/LayoutSVGRoot.h

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 40 matching lines @@
     virtual void setNeedsBoundariesUpdate() override { m_needsBoundariesOrTransformUpdate = true; }
     virtual void setNeedsTransformUpdate() override { m_needsBoundariesOrTransformUpdate = true; }
 
     IntSize containerSize() const { return m_containerSize; }
     void setContainerSize(const IntSize& containerSize)
     {
         // SVGImage::draw() does a view layout prior to painting,
         // and we need that layout to know of the new size otherwise
         // the layout may be incorrectly using the old size.
         if (m_containerSize != containerSize)
-            setNeedsLayoutAndFullPaintInvalidation();
+            setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SizeChanged);
         m_containerSize = containerSize;
     }
 
     // localToBorderBoxTransform maps local SVG viewport coordinates to local CSS box coordinates.
     const AffineTransform& localToBorderBoxTransform() const { return m_localToBorderBoxTransform; }
     bool shouldApplyViewportClip() const;
 
     virtual bool hasNonIsolatedBlendingDescendants() const override final;
 
     virtual const char* name() const override { return "LayoutSVGRoot"; }
@@ skipping 55 matching lines @@
     bool m_hasBoxDecorationBackground : 1;
     mutable bool m_hasNonIsolatedBlendingDescendants : 1;
     mutable bool m_hasNonIsolatedBlendingDescendantsDirty : 1;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGRoot, isSVGRoot());
 
 } // namespace blink
 
 #endif // LayoutSVGRoot_h