Move Error methods to C++

test/mjsunit/cross-realm-filtering.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var realms = [Realm.current(), Realm.create()];
 
 // Check stack trace filtering across security contexts.
 var thrower_script =
     "(function () { Realm.eval(Realm.current(), 'throw Error()') })";
 Realm.shared = {
@@ skipping 15 matching lines @@
   }                                                                            \
 ";
 
 function assertNotIn(thrower, error) {
   for (var i = 0; i < error.length; i++) {
     assertFalse(false === error[i].getFunction());
   }
 }
 
 Realm.eval(realms[1], script);
-assertSame(3, Realm.shared.error_0.length);
-assertSame(4, Realm.shared.error_1.length);
+assertSame(2, Realm.shared.error_0.length);
+assertSame(3, Realm.shared.error_1.length);
 
-assertTrue(Realm.shared.thrower_1 === Realm.shared.error_1[2].getFunction());
+assertTrue(Realm.shared.thrower_1 === Realm.shared.error_1[1].getFunction());
 assertNotIn(Realm.shared.thrower_0, Realm.shared.error_0);
 assertNotIn(Realm.shared.thrower_0, Realm.shared.error_1);
 
 Realm.eval(realms[0], script);
-assertSame(5, Realm.shared.error_0.length);
-assertSame(4, Realm.shared.error_1.length);
+assertSame(4, Realm.shared.error_0.length);
+assertSame(3, Realm.shared.error_1.length);
 
-assertTrue(Realm.shared.thrower_0 === Realm.shared.error_0[2].getFunction());
+assertTrue(Realm.shared.thrower_0 === Realm.shared.error_0[1].getFunction());
 assertNotIn(Realm.shared.thrower_1, Realm.shared.error_0);
 assertNotIn(Realm.shared.thrower_1, Realm.shared.error_1);
 
 
 // Check .caller filtering across security contexts.
 var caller_script = "(function (f) { f(); })";
 Realm.shared = {
   caller_0 : Realm.eval(realms[0], caller_script),
   caller_1 : Realm.eval(realms[1], caller_script),
 }
@@ skipping 23 matching lines @@
 
 var o = new f();
 var proto = Object.getPrototypeOf(o);
 assertFalse(proto === Object.prototype);
 assertTrue(proto === otherObject.prototype);
 
 o = Realm.eval(realmIndex, "new f()");
 proto = Object.getPrototypeOf(o);
 assertFalse(proto === Object.prototype);
 assertTrue(proto === otherObject.prototype);