SVG: Move/rename reference management to SVGElement

Source/core/svg/SVGTextPathElement.cpp

Index: Source/core/svg/SVGTextPathElement.cpp
diff --git a/Source/core/svg/SVGTextPathElement.cpp b/Source/core/svg/SVGTextPathElement.cpp
index 8c42b33d570485456e7da5375ac6faadee618543..84a07af00d9926afe0e1d266f0745dce43b99e16 100644
--- a/Source/core/svg/SVGTextPathElement.cpp
+++ b/Source/core/svg/SVGTextPathElement.cpp
@@ -73,7 +73,7 @@ SVGTextPathElement::~SVGTextPathElement()
 
 void SVGTextPathElement::clearResourceReferences()
 {
-    document().accessSVGExtensions().removeAllTargetReferencesForElement(this);
+    removeAllOutgoingReferences();
 }
 
 bool SVGTextPathElement::isSupportedAttribute(const QualifiedName& attrName)
@@ -161,7 +161,7 @@ void SVGTextPathElement::buildPendingResource()
     } 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.
-        document().accessSVGExtensions().addElementReferencingTarget(this, toSVGElement((target)));
+        addReferenceTo(toSVGElement((target)));
     }
 }