Backed out changeset 39ccae4efa0f

dom/base/nsDOMClassInfo.cpp

@@ -6266,11 +6266,6 @@ ResolvePrototype(nsIXPConnect *aXPConnect, nsGlobalWindow *aWin, JSContext *cx,
     }
 
     if (dot_prototype) {
-      JSAutoEnterCompartment ac;
-      if (!ac.enter(cx, dot_prototype)) {
-        return NS_ERROR_UNEXPECTED;
-      }
-
       JSObject *xpc_proto_proto = ::JS_GetPrototype(cx, dot_prototype);
 
       if (proto &&
@@ -6282,11 +6277,6 @@ ResolvePrototype(nsIXPConnect *aXPConnect, nsGlobalWindow *aWin, JSContext *cx,
         }
       }
     } else {
-      JSAutoEnterCompartment ac;
-      if (!ac.enter(cx, winobj)) {
-        return NS_ERROR_UNEXPECTED;
-      }
-
       dot_prototype = ::JS_NewObject(cx, &sDOMConstructorProtoClass, proto,
                                      winobj);
       NS_ENSURE_TRUE(dot_prototype, NS_ERROR_OUT_OF_MEMORY);