Change the type of a SVG <use> element's shadow tree from "user agent" to "closed"

third_party/WebKit/Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann
  * <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 633 matching lines @@
 
 SVGElement* SVGElement::correspondingElement() const {
   DCHECK(!hasSVGRareData() || !svgRareData()->correspondingElement() ||
          containingShadowRoot());
   return hasSVGRareData() ? svgRareData()->correspondingElement() : 0;
 }
 
 SVGUseElement* SVGElement::correspondingUseElement() const {
   if (ShadowRoot* root = containingShadowRoot()) {
     if (isSVGUseElement(root->host()) &&
-        (root->type() == ShadowRootType::UserAgent))
+        (root->type() == ShadowRootType::Closed))

[fs, 2017/03/15 13:34:45]

Nit: Could you drop the redundant ()?

[hayato, 2017/03/16 03:57:34]

Good catch. It is redundant. Done.

       return &toSVGUseElement(root->host());
   }
   return nullptr;
 }
 
 void SVGElement::setCorrespondingElement(SVGElement* correspondingElement) {
   ensureSVGRareData()->setCorrespondingElement(correspondingElement);
 }
 
 bool SVGElement::inUseShadowTree() const {
@@ skipping 636 matching lines @@
   visitor->trace(m_className);
   Element::trace(visitor);
 }
 
 const AtomicString& SVGElement::eventParameterName() {
   DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt"));
   return evtString;
 }
 
 }  // namespace blink