--- a/js/src/xpconnect/idl/Makefile.in
+++ b/js/src/xpconnect/idl/Makefile.in
@@ -57,16 +57,15 @@ XPIDLSRCS	= \
 		xpcIJSModuleLoader.idl \
 		nsIJSContextStack.idl \
 		nsIJSRuntimeService.idl \
 		nsIXPConnect.idl \
 		nsIXPCSecurityManager.idl \
 		nsIXPCScriptable.idl \
 		nsIScriptError.idl \
 		nsIXPCScriptNotify.idl \
-		nsIScriptableInterfaces.idl \
 		xpcIJSWeakReference.idl \
 		xpcIJSGetFactory.idl \
 		nsIJSEngineTelemetryStats.idl \
 		$(NULL)
 
 include $(topsrcdir)/config/rules.mk
 

deleted file mode 100644
--- a/js/src/xpconnect/idl/nsIScriptableInterfaces.idl
+++ /dev/null
@@ -1,67 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2002
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   John Bandhauer <jband@netscape.com> (original author)
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-#include "nsISupports.idl"
-#include "nsIInterfaceInfoManager.idl"
-
-/**
-* Interface used as Components.interfaces (and elsewhere)
-* (interesting stuff only reflected into JavaScript)
-*/
-[scriptable, uuid(01c78c65-31da-456b-90bf-da39d09fdcbf)]
-interface nsIScriptableInterfaces : nsISupports
-{
-    [noscript] attribute nsIInterfaceInfoManager manager;
-};
-
-%{C++
-// The contractID for the implementation built into xpconnect
-#define NS_SCRIPTABLE_INTERFACES_CONTRACTID "@mozilla.org/scriptableinterfaces;1"
-%}
-
-
-/**
-* interface of Components.interfacesByID
-* (interesting stuff only reflected into JavaScript)
-*/
-[scriptable, uuid(c99cffac-5aed-4267-ad2f-f4a4c9d4a081)]
-interface nsIScriptableInterfacesByID : nsISupports
-{
-};

--- a/js/src/xpconnect/idl/xpccomponents.idl
+++ b/js/src/xpconnect/idl/xpccomponents.idl
@@ -37,25 +37,42 @@
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
 #include "nsISupports.idl"
 #include "xpcexception.idl"
 #include "xpcjsid.idl"
 #include "nsIComponentManager.idl"
-#include "nsIScriptableInterfaces.idl"
 
 %{C++
 #include "jspubtd.h"
 %}
 
 interface xpcIJSWeakReference;
 
 /**
+* interface of Components.interfacesByID
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, uuid(c99cffac-5aed-4267-ad2f-f4a4c9d4a081)]
+interface nsIXPCComponents_InterfacesByID : nsISupports
+{
+};
+
+/**
+* interface of Components.interfaces
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, uuid(b8c31bba-79db-4a1d-930d-4cdd68713f9e)]
+interface nsIXPCComponents_Interfaces : nsISupports
+{
+};
+
+/**
 * interface of Components.classes
 * (interesting stuff only reflected into JavaScript)
 */
 [scriptable, uuid(978ff520-d26c-11d2-9842-006008962422)]
 interface nsIXPCComponents_Classes : nsISupports
 {
 };
 
@@ -277,28 +294,28 @@ interface nsIXPCComponents_Utils : nsISu
 };
 
 /**
 * interface of JavaScript's 'Components' object
 */
 [scriptable, uuid(155809f1-71f1-47c5-be97-d812ba560405)]
 interface nsIXPCComponents : nsISupports
 {
-    readonly attribute nsIScriptableInterfaces      interfaces;
-    readonly attribute nsIScriptableInterfacesByID  interfacesByID;
-    readonly attribute nsIXPCComponents_Classes     classes;
-    readonly attribute nsIXPCComponents_ClassesByID classesByID;
-    readonly attribute nsIStackFrame                stack;
-    readonly attribute nsIXPCComponents_Results     results;
-    readonly attribute nsIComponentManager          manager;
-    readonly attribute nsIXPCComponents_Utils       utils;
+    readonly attribute nsIXPCComponents_Interfaces      interfaces;
+    readonly attribute nsIXPCComponents_InterfacesByID  interfacesByID;
+    readonly attribute nsIXPCComponents_Classes         classes;
+    readonly attribute nsIXPCComponents_ClassesByID     classesByID;
+    readonly attribute nsIStackFrame                    stack;
+    readonly attribute nsIXPCComponents_Results         results;
+    readonly attribute nsIComponentManager              manager;
+    readonly attribute nsIXPCComponents_Utils           utils;
 
-    readonly attribute nsIXPCComponents_ID          ID;
-    readonly attribute nsIXPCComponents_Exception   Exception;
-    readonly attribute nsIXPCComponents_Constructor Constructor;
+    readonly attribute nsIXPCComponents_ID              ID;
+    readonly attribute nsIXPCComponents_Exception       Exception;
+    readonly attribute nsIXPCComponents_Constructor     Constructor;
 
     boolean isSuccessCode(in nsresult result);
 
     /* @deprecated Use Components.utils.lookupMethod instead.
      * (But are you sure you really want this method any more?
      *  See http://developer-test.mozilla.org/en/docs/XPCNativeWrapper )
      */
     [deprecated] void lookupMethod();

--- a/js/src/xpconnect/src/xpccomponents.cpp
+++ b/js/src/xpconnect/src/xpccomponents.cpp
@@ -100,16 +100,42 @@ char * xpc_CheckAccessList(const PRUnich
     for(const char** p = list; *p; p++)
         if(!strcmp(*p, asciiName.get()))
             return xpc_CloneAllAccess();
 
     return nsnull;
 }
 
 /***************************************************************************/
+/***************************************************************************/
+/***************************************************************************/
+
+
+
+class nsXPCComponents_Interfaces :
+            public nsIXPCComponents_Interfaces,
+            public nsIXPCScriptable,
+            public nsIClassInfo,
+            public nsISecurityCheckedComponent
+{
+public:
+    // all the interface method declarations...
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSIXPCCOMPONENTS_INTERFACES
+    NS_DECL_NSIXPCSCRIPTABLE
+    NS_DECL_NSICLASSINFO
+    NS_DECL_NSISECURITYCHECKEDCOMPONENT
+
+public:
+    nsXPCComponents_Interfaces();
+    virtual ~nsXPCComponents_Interfaces();
+
+private:
+    nsCOMPtr<nsIInterfaceInfoManager> mManager;
+};
 
 /* void getInterfaces (out PRUint32 count, [array, size_is (count), retval]
                        out nsIIDPtr array); */
 NS_IMETHODIMP
 nsXPCComponents_Interfaces::GetInterfaces(PRUint32 *aCount, nsIID * **aArray)
 {
     const PRUint32 count = 3;
     *aCount = count;
@@ -122,17 +148,17 @@ nsXPCComponents_Interfaces::GetInterface
     nsIID* clone;
 #define PUSH_IID(id) \
     clone = static_cast<nsIID *>(nsMemory::Clone(&NS_GET_IID( id ),   \
                                                     sizeof(nsIID)));  \
     if (!clone)                                                       \
         goto oom;                                                     \
     array[index++] = clone;
 
-    PUSH_IID(nsIScriptableInterfaces)
+    PUSH_IID(nsIXPCComponents_Interfaces)
     PUSH_IID(nsIXPCScriptable)
     PUSH_IID(nsISecurityCheckedComponent)
 #undef PUSH_IID
 
     return NS_OK;
 oom:
     while (index)
         nsMemory::Free(array[--index]);
@@ -205,35 +231,22 @@ nsXPCComponents_Interfaces::nsXPCCompone
 }
 
 nsXPCComponents_Interfaces::~nsXPCComponents_Interfaces()
 {
     // empty
 }
 
 
-/* [noscript] attribute nsIInterfaceInfoManager manager; */
-NS_IMETHODIMP nsXPCComponents_Interfaces::GetManager(nsIInterfaceInfoManager * *aManager)
-{
-    *aManager = mManager;
-    NS_IF_ADDREF(*aManager);
-    return NS_OK;
-}
-NS_IMETHODIMP nsXPCComponents_Interfaces::SetManager(nsIInterfaceInfoManager * aManager)
-{
-    mManager = aManager;
-    return NS_OK;
-}
-
 NS_INTERFACE_MAP_BEGIN(nsXPCComponents_Interfaces)
-  NS_INTERFACE_MAP_ENTRY(nsIScriptableInterfaces)
+  NS_INTERFACE_MAP_ENTRY(nsIXPCComponents_Interfaces)
   NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
   NS_INTERFACE_MAP_ENTRY(nsIClassInfo)
   NS_INTERFACE_MAP_ENTRY(nsISecurityCheckedComponent)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIScriptableInterfaces)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIXPCComponents_Interfaces)
 NS_INTERFACE_MAP_END_THREADSAFE
 
 NS_IMPL_THREADSAFE_ADDREF(nsXPCComponents_Interfaces)
 NS_IMPL_THREADSAFE_RELEASE(nsXPCComponents_Interfaces)
 
 // The nsIXPCScriptable map declaration that will generate stubs for us...
 #define XPC_MAP_CLASSNAME           nsXPCComponents_Interfaces
 #define XPC_MAP_QUOTED_CLASSNAME   "nsXPCComponents_Interfaces"
@@ -407,25 +420,25 @@ nsXPCComponents_Interfaces::CanSetProper
     return NS_OK;
 }
 
 /***************************************************************************/
 /***************************************************************************/
 /***************************************************************************/
 
 class nsXPCComponents_InterfacesByID :
-            public nsIScriptableInterfacesByID,
+            public nsIXPCComponents_InterfacesByID,
             public nsIXPCScriptable,
             public nsIClassInfo,
             public nsISecurityCheckedComponent
 {
 public:
     // all the interface method declarations...
     NS_DECL_ISUPPORTS
-    NS_DECL_NSISCRIPTABLEINTERFACESBYID
+    NS_DECL_NSIXPCCOMPONENTS_INTERFACESBYID
     NS_DECL_NSIXPCSCRIPTABLE
     NS_DECL_NSICLASSINFO
     NS_DECL_NSISECURITYCHECKEDCOMPONENT
 
 public:
     nsXPCComponents_InterfacesByID();
     virtual ~nsXPCComponents_InterfacesByID();
 
@@ -450,17 +463,17 @@ nsXPCComponents_InterfacesByID::GetInter
     nsIID* clone;
 #define PUSH_IID(id) \
     clone = static_cast<nsIID *>(nsMemory::Clone(&NS_GET_IID( id ),   \
                                                     sizeof(nsIID)));  \
     if (!clone)                                                       \
         goto oom;                                                     \
     array[index++] = clone;
 
-    PUSH_IID(nsIScriptableInterfacesByID)
+    PUSH_IID(nsIXPCComponents_InterfacesByID)
     PUSH_IID(nsIXPCScriptable)
     PUSH_IID(nsISecurityCheckedComponent)
 #undef PUSH_IID
 
     return NS_OK;
 oom:
     while (index)
         nsMemory::Free(array[--index]);
@@ -533,21 +546,21 @@ nsXPCComponents_InterfacesByID::nsXPCCom
 }
 
 nsXPCComponents_InterfacesByID::~nsXPCComponents_InterfacesByID()
 {
     // empty
 }
 
 NS_INTERFACE_MAP_BEGIN(nsXPCComponents_InterfacesByID)
-  NS_INTERFACE_MAP_ENTRY(nsIScriptableInterfacesByID)
+  NS_INTERFACE_MAP_ENTRY(nsIXPCComponents_InterfacesByID)
   NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
   NS_INTERFACE_MAP_ENTRY(nsIClassInfo)
   NS_INTERFACE_MAP_ENTRY(nsISecurityCheckedComponent)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIScriptableInterfacesByID)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIXPCComponents_InterfacesByID)
 NS_INTERFACE_MAP_END_THREADSAFE
 
 NS_IMPL_THREADSAFE_ADDREF(nsXPCComponents_InterfacesByID)
 NS_IMPL_THREADSAFE_RELEASE(nsXPCComponents_InterfacesByID)
 
 // The nsIXPCScriptable map declaration that will generate stubs for us...
 #define XPC_MAP_CLASSNAME           nsXPCComponents_InterfacesByID
 #define XPC_MAP_QUOTED_CLASSNAME   "nsXPCComponents_InterfacesByID"
@@ -2484,27 +2497,27 @@ nsXPCComponents_Constructor::CallOrConst
             return ThrowAndFail(NS_ERROR_XPC_BAD_CONVERT_JS, cx, _retval);
     }
 
     if(argc >= 2)
     {
         // argv[1] is an iid name string
         // XXXjband support passing "Components.interfaces.foo"?
 
-        nsCOMPtr<nsIScriptableInterfaces> ifaces;
+        nsCOMPtr<nsIXPCComponents_Interfaces> ifaces;
         nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
         JSObject* ifacesObj = nsnull;
 
         // we do the lookup by asking the Components.interfaces object
         // for the property with this name - i.e. we let its caching of these
         // nsIJSIID objects work for us.
 
         if(NS_FAILED(comp->GetInterfaces(getter_AddRefs(ifaces))) ||
            NS_FAILED(xpc->WrapNative(cx, obj, ifaces,
-                                     NS_GET_IID(nsIScriptableInterfaces),
+                                     NS_GET_IID(nsIXPCComponents_Interfaces),
                                      getter_AddRefs(holder))) || !holder ||
            NS_FAILED(holder->GetJSObject(&ifacesObj)) || !ifacesObj)
         {
             return ThrowAndFail(NS_ERROR_XPC_UNEXPECTED, cx, _retval);
         }
 
         JSString* str = JS_ValueToString(cx, argv[1]);
         jsid id;
@@ -4149,40 +4162,40 @@ nsXPCComponents::ClearMembers()
     NS_IF_RELEASE(mResults);
     NS_IF_RELEASE(mID);
     NS_IF_RELEASE(mException);
     NS_IF_RELEASE(mConstructor);
     NS_IF_RELEASE(mUtils);
 }
 
 /*******************************************/
-#define XPC_IMPL_GET_OBJ_METHOD(_b, _n) \
-NS_IMETHODIMP nsXPCComponents::Get##_n(_b##_n * *a##_n) { \
+#define XPC_IMPL_GET_OBJ_METHOD(_n) \
+NS_IMETHODIMP nsXPCComponents::Get##_n(nsIXPCComponents_##_n * *a##_n) { \
     NS_ENSURE_ARG_POINTER(a##_n); \
     if(!m##_n) { \
         if(!(m##_n = new nsXPCComponents_##_n())) { \
             *a##_n = nsnull; \
             return NS_ERROR_OUT_OF_MEMORY; \
         } \
         NS_ADDREF(m##_n); \
     } \
     NS_ADDREF(m##_n); \
     *a##_n = m##_n; \
     return NS_OK; \
 }
 
-XPC_IMPL_GET_OBJ_METHOD(nsIScriptable,     Interfaces)
-XPC_IMPL_GET_OBJ_METHOD(nsIScriptable,     InterfacesByID)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, Classes)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, ClassesByID)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, Results)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, ID)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, Exception)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, Constructor)
-XPC_IMPL_GET_OBJ_METHOD(nsIXPCComponents_, Utils)
+XPC_IMPL_GET_OBJ_METHOD(Interfaces)
+XPC_IMPL_GET_OBJ_METHOD(InterfacesByID)
+XPC_IMPL_GET_OBJ_METHOD(Classes)
+XPC_IMPL_GET_OBJ_METHOD(ClassesByID)
+XPC_IMPL_GET_OBJ_METHOD(Results)
+XPC_IMPL_GET_OBJ_METHOD(ID)
+XPC_IMPL_GET_OBJ_METHOD(Exception)
+XPC_IMPL_GET_OBJ_METHOD(Constructor)
+XPC_IMPL_GET_OBJ_METHOD(Utils)
 
 #undef XPC_IMPL_GET_OBJ_METHOD
 /*******************************************/
 
 NS_IMETHODIMP
 nsXPCComponents::IsSuccessCode(nsresult result, PRBool *out)
 {
     *out = NS_SUCCEEDED(result);

--- a/js/src/xpconnect/src/xpcmodule.h
+++ b/js/src/xpconnect/src/xpcmodule.h
@@ -57,48 +57,44 @@
 #define MOZJSSUBSCRIPTLOADER_CONTRACTID "@mozilla.org/moz/jssubscript-loader;1"
 
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsJSID)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsXPCException)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsXPCJSContextStackIterator)
 NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(nsIXPConnect,
                                          nsXPConnect::GetSingleton)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsScriptError)
-NS_GENERIC_FACTORY_CONSTRUCTOR(nsXPCComponents_Interfaces)
 
 NS_GENERIC_FACTORY_CONSTRUCTOR(mozJSComponentLoader)
 NS_GENERIC_FACTORY_CONSTRUCTOR(mozJSSubScriptLoader)
 
 NS_DEFINE_NAMED_CID(NS_JS_ID_CID);
 NS_DEFINE_NAMED_CID(NS_XPCONNECT_CID);
 NS_DEFINE_NAMED_CID(NS_XPCEXCEPTION_CID);
 NS_DEFINE_NAMED_CID(NS_SCRIPTERROR_CID);
-NS_DEFINE_NAMED_CID(SCRIPTABLE_INTERFACES_CID);
 NS_DEFINE_NAMED_CID(NS_XPC_JSCONTEXT_STACK_ITERATOR_CID);
 NS_DEFINE_NAMED_CID(MOZJSCOMPONENTLOADER_CID);
 NS_DEFINE_NAMED_CID(MOZ_JSSUBSCRIPTLOADER_CID);
 
 #define XPCONNECT_CIDENTRIES \
   { &kNS_JS_ID_CID, false, NULL,  nsJSIDConstructor }, \
   { &kNS_XPCONNECT_CID, false, NULL,  nsIXPConnectConstructor }, \
   { &kNS_XPCEXCEPTION_CID, false, NULL, nsXPCExceptionConstructor }, \
   { &kNS_SCRIPTERROR_CID, false, NULL, nsScriptErrorConstructor }, \
-  { &kSCRIPTABLE_INTERFACES_CID, false, NULL, nsXPCComponents_InterfacesConstructor }, \
   { &kNS_XPC_JSCONTEXT_STACK_ITERATOR_CID, false, NULL, nsXPCJSContextStackIteratorConstructor }, \
   { &kMOZJSCOMPONENTLOADER_CID, false, NULL, mozJSComponentLoaderConstructor }, \
   { &kMOZ_JSSUBSCRIPTLOADER_CID, false, NULL, mozJSSubScriptLoaderConstructor },
 
 #define XPCONNECT_CONTRACTS \
   { XPC_ID_CONTRACTID, &kNS_JS_ID_CID }, \
   { XPC_XPCONNECT_CONTRACTID, &kNS_XPCONNECT_CID }, \
   { XPC_CONTEXT_STACK_CONTRACTID, &kNS_XPCONNECT_CID }, \
   { XPC_RUNTIME_CONTRACTID, &kNS_XPCONNECT_CID }, \
   { XPC_EXCEPTION_CONTRACTID, &kNS_XPCEXCEPTION_CID }, \
   { NS_SCRIPTERROR_CONTRACTID, &kNS_SCRIPTERROR_CID }, \
-  { NS_SCRIPTABLE_INTERFACES_CONTRACTID, &kSCRIPTABLE_INTERFACES_CID }, \
   { XPC_JSCONTEXT_STACK_ITERATOR_CONTRACTID, &kNS_XPC_JSCONTEXT_STACK_ITERATOR_CID }, \
   { MOZJSCOMPONENTLOADER_CONTRACTID, &kMOZJSCOMPONENTLOADER_CID }, \
   { MOZJSSUBSCRIPTLOADER_CONTRACTID, &kMOZ_JSSUBSCRIPTLOADER_CID },
 
 #define XPCONNECT_CATEGORIES \
   { "module-loader", "js", MOZJSCOMPONENTLOADER_CONTRACTID },
 
 nsresult xpcModuleCtor();

--- a/js/src/xpconnect/src/xpcprivate.h
+++ b/js/src/xpconnect/src/xpcprivate.h
@@ -3819,40 +3819,16 @@ private:
     nsXPCComponents_ClassesByID*    mClassesByID;
     nsXPCComponents_Results*        mResults;
     nsXPCComponents_ID*             mID;
     nsXPCComponents_Exception*      mException;
     nsXPCComponents_Constructor*    mConstructor;
     nsXPCComponents_Utils*          mUtils;
 };
 
-/***************************************************************************/
-
-class nsXPCComponents_Interfaces :
-            public nsIScriptableInterfaces,
-            public nsIXPCScriptable,
-            public nsIClassInfo,
-            public nsISecurityCheckedComponent
-{
-public:
-    // all the interface method declarations...
-    NS_DECL_ISUPPORTS
-    NS_DECL_NSISCRIPTABLEINTERFACES
-    NS_DECL_NSIXPCSCRIPTABLE
-    NS_DECL_NSICLASSINFO
-    NS_DECL_NSISECURITYCHECKEDCOMPONENT
-
-public:
-    nsXPCComponents_Interfaces();
-    virtual ~nsXPCComponents_Interfaces();
-
-private:
-    nsCOMPtr<nsIInterfaceInfoManager> mManager;
-};
-
 
 /***************************************************************************/
 
 extern JSObject*
 xpc_NewIDObject(JSContext *cx, JSObject* jsobj, const nsID& aID);
 
 extern const nsID*
 xpc_JSObjectToID(JSContext *cx, JSObject* obj);