SVG object with same idrefs get conflicted even they are under different shadow root

third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp

Index: third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp b/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
index 4a0b73756cebe5719c9df47e1d3f24ff49437a5e..82abb0dd8674183b2333f2538e4dc0c9eba97bb0 100644
--- a/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
+++ b/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
@@ -245,11 +245,11 @@ void SVGSMILElement::buildPendingResource()
 
     if (!svgTarget) {
         // Do not register as pending if we are already pending this resource.
-        if (document().accessSVGExtensions().isElementPendingResource(this, id))
+        if (treeScope().accessSVGTreeScopedResources().isElementPendingResource(this, id))
             return;
 
         if (!id.isEmpty()) {
-            document().accessSVGExtensions().addPendingResource(id, this);
+            treeScope().accessSVGTreeScopedResources().addPendingResource(id, this);
             ASSERT(hasPendingResources());
         }
     } else {
@@ -627,8 +627,8 @@ void SVGSMILElement::connectEventBaseConditions()
             ASSERT(!condition->syncBase());
             SVGElement* eventBase = eventBaseFor(*condition);
             if (!eventBase) {
-                if (!condition->baseID().isEmpty() && !document().accessSVGExtensions().isElementPendingResource(this, AtomicString(condition->baseID())))
-                    document().accessSVGExtensions().addPendingResource(AtomicString(condition->baseID()), this);
+                if (!condition->baseID().isEmpty() && !treeScope().accessSVGTreeScopedResources().isElementPendingResource(this, AtomicString(condition->baseID())))
+                    treeScope().accessSVGTreeScopedResources().addPendingResource(AtomicString(condition->baseID()), this);
                 continue;
             }
             ASSERT(!condition->eventListener());