diff --git a/content/svg/content/src/DOMSVGTransformList.cpp b/content/svg/content/src/DOMSVGTransformList.cpp
index c0cd0fed4c1..3984eed0882 100644
--- a/content/svg/content/src/DOMSVGTransformList.cpp
+++ b/content/svg/content/src/DOMSVGTransformList.cpp
@@ -59,13 +59,8 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGTransformList)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
-NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMSVGTransformList)
-NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMSVGTransformList)
-
-NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGTransformList)
-  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
-  NS_INTERFACE_MAP_ENTRY(nsISupports)
-NS_INTERFACE_MAP_END
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DOMSVGTransformList, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DOMSVGTransformList, Release)
 
 //----------------------------------------------------------------------
 // DOMSVGTransformList methods:
diff --git a/content/svg/content/src/DOMSVGTransformList.h b/content/svg/content/src/DOMSVGTransformList.h
index 24cb2b02295..e5b2d61c77c 100644
--- a/content/svg/content/src/DOMSVGTransformList.h
+++ b/content/svg/content/src/DOMSVGTransformList.h
@@ -33,14 +33,13 @@ class SVGTransform;
  *
  * See the architecture comment in SVGAnimatedTransformList.h.
  */
-class DOMSVGTransformList MOZ_FINAL : public nsISupports,
-                                      public nsWrapperCache
+class DOMSVGTransformList MOZ_FINAL : public nsWrapperCache
 {
   friend class dom::SVGTransform;
 
 public:
-  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
-  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMSVGTransformList)
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(DOMSVGTransformList)
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(DOMSVGTransformList)
 
   DOMSVGTransformList(dom::SVGAnimatedTransformList *aAList,
                       const SVGTransformList &aInternalList)