SVG objects with same idrefs conflict when under different shadow root

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

 /*
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2010 Rob Buis <rwlbuis@gmail.com>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/svg/SVGTextPathElement.h"
 
 #include "core/layout/svg/LayoutSVGTextPath.h"
-#include "core/svg/SVGDocumentExtensions.h"
+#include "core/svg/SVGTreeScopeResources.h"
 
 namespace blink {
 
 template <>
 const SVGEnumerationStringEntries&
 getStaticStringEntries<SVGTextPathMethodType>() {
   DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
   if (entries.isEmpty()) {
     entries.push_back(std::make_pair(SVGTextPathMethodAlign, "align"));
     entries.push_back(std::make_pair(SVGTextPathMethodStretch, "stretch"));
@@ skipping 85 matching lines @@
 void SVGTextPathElement::buildPendingResource() {
   clearResourceReferences();
   if (!isConnected())
     return;
 
   AtomicString id;
   Element* target = SVGURIReference::targetElementFromIRIString(
       hrefString(), treeScope(), &id);
   if (!target) {
     // Do not register as pending if we are already pending this resource.
-    if (document().accessSVGExtensions().isElementPendingResource(this, id))
+    if (treeScope().ensureSVGTreeScopedResources().isElementPendingResource(
+            this, id))
       return;
-
     if (!id.isEmpty()) {
-      document().accessSVGExtensions().addPendingResource(id, this);
-      ASSERT(hasPendingResources());
+      treeScope().ensureSVGTreeScopedResources().addPendingResource(id, this);
+      DCHECK(hasPendingResources());
     }
   } else if (isSVGPathElement(*target)) {
     // Register us with the target in the dependencies map. Any change of
     // hrefElement that leads to relayout/repainting now informs us, so we can
     // react to it.
     addReferenceTo(toSVGElement((target)));
   }
 
   if (LayoutObject* layoutObject = this->layoutObject())
     markForLayoutAndParentResourceInvalidation(layoutObject);
@@ skipping 11 matching lines @@
   if (rootParent->isConnected())
     clearResourceReferences();
 }
 
 bool SVGTextPathElement::selfHasRelativeLengths() const {
   return m_startOffset->currentValue()->isRelative() ||
          SVGTextContentElement::selfHasRelativeLengths();
 }
 
 }  // namespace blink