Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/svg/SVGSVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Google, Inc.
  *
  * 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 282 matching lines @@
         // height attributes can affect the replaced size so we need
         // to mark it for updating.
         //
         // FIXME: For width/height animated as XML attributes on SVG
         // roots, there is an attribute synchronization missing. See
         // http://crbug.com/364807
         if (widthChanged || heightChanged) {
             RenderObject* renderObject = renderer();
             if (renderObject && renderObject->isSVGRoot()) {
                 invalidateSVGPresentationAttributeStyle();
-                setNeedsStyleRecalc(LocalStyleChange);
+                setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::SVGContainerSizeChange));
             }
         }
     }
 
     if (SVGFitToViewBox::isKnownAttribute(attrName)) {
         updateRelativeLengthsOrViewBox = true;
         if (RenderObject* object = renderer())
             object->setNeedsTransformUpdate();
     }
 
@@ skipping 459 matching lines @@
 }
 
 void SVGSVGElement::trace(Visitor* visitor)
 {
     visitor->trace(m_timeContainer);
     visitor->trace(m_viewSpec);
     SVGGraphicsElement::trace(visitor);
 }
 
 } // namespace blink