Bug 886176 - Clean up XPCWN's participant. r=smaug

js/xpconnect/src/xpcprivate.h

@@ -2262,15 +2262,10 @@ public:
     class NS_CYCLE_COLLECTION_INNERCLASS
      : public nsXPCOMCycleCollectionParticipant
     {
-      NS_DECL_CYCLE_COLLECTION_CLASS_BODY_NO_UNLINK(XPCWrappedNative,
-                                                    XPCWrappedNative)
+      NS_DECL_CYCLE_COLLECTION_CLASS_BODY(XPCWrappedNative, XPCWrappedNative)
       NS_IMETHOD Root(void *p) { return NS_OK; }
-      NS_IMETHOD Unlink(void *p);
       NS_IMETHOD Unroot(void *p) { return NS_OK; }
-      static nsXPCOMCycleCollectionParticipant* GetParticipant()
-      {
-        return &XPCWrappedNative::NS_CYCLE_COLLECTION_INNERNAME;
-      }
+      NS_IMPL_GET_XPCOM_CYCLE_COLLECTION_PARTICIPANT(XPCWrappedNative)
     };
     static NS_CYCLE_COLLECTION_INNERCLASS NS_CYCLE_COLLECTION_INNERNAME;