Remove always-on --harmony-rest-parameters flag

test/mjsunit/harmony/arrow-rest-params-lazy-parsing.js

-// Copyright 2015 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.
-
-// Flags: --harmony-rest-parameters
-// Flags: --min-preparse-length=0
-
-(function testRestIndex() {
-  assertEquals(5, ((...args) => args.length)(1,2,3,4,5));
-  assertEquals(4, ((a, ...args) => args.length)(1,2,3,4,5));
-  assertEquals(3, ((a, b, ...args) => args.length)(1,2,3,4,5));
-  assertEquals(2, ((a, b, c, ...args) => args.length)(1,2,3,4,5));
-  assertEquals(1, ((a, b, c, d, ...args) => args.length)(1,2,3,4,5));
-  assertEquals(0, ((a, b, c, d, e, ...args) => args.length)(1,2,3,4,5));
-})();
-
-// strictTest and sloppyTest should be called with descending natural
-// numbers, as in:
-//
-//   strictTest(6,5,4,3,2,1)
-//
-var strictTest = (function() {
-  "use strict";
-  return (a, b, ...c) => {
-    assertEquals(Array, c.constructor);
-    assertTrue(Array.isArray(c));
-
-    var expectedLength = (a === undefined) ? 0 : a - 2;
-    assertEquals(expectedLength, c.length);
-
-    for (var i = 2; i < a; ++i) {
-      assertEquals(c[i - 2], a - i);
-    }
-  };
-})();
-
-var sloppyTest = (a, b, ...c) => {
-  assertEquals(Array, c.constructor);
-  assertTrue(Array.isArray(c));
-
-  var expectedLength = (a === undefined) ? 0 : a - 2;
-  assertEquals(expectedLength, c.length);
-
-  for (var i = 2; i < a; ++i) {
-    assertEquals(c[i - 2], a - i);
-  }
-};
-
-
-var O = {
-  strict: strictTest,
-  sloppy: sloppyTest
-};
-
-(function testStrictRestParamArity() {
-  assertEquals(2, strictTest.length);
-  assertEquals(2, O.strict.length);
-})();
-
-
-(function testRestParamsStrictMode() {
-  strictTest();
-  strictTest(2, 1);
-  strictTest(6, 5, 4, 3, 2, 1);
-  strictTest(3, 2, 1);
-  O.strict();
-  O.strict(2, 1);
-  O.strict(6, 5, 4, 3, 2, 1);
-  O.strict(3, 2, 1);
-})();
-
-
-(function testRestParamsStrictModeApply() {
-  strictTest.apply(null, []);
-  strictTest.apply(null, [2, 1]);
-  strictTest.apply(null, [6, 5, 4, 3, 2, 1]);
-  strictTest.apply(null, [3, 2, 1]);
-  O.strict.apply(O, []);
-  O.strict.apply(O, [2, 1]);
-  O.strict.apply(O, [6, 5, 4, 3, 2, 1]);
-  O.strict.apply(O, [3, 2, 1]);
-})();
-
-
-(function testRestParamsStrictModeCall() {
-  strictTest.call(null);
-  strictTest.call(null, 2, 1);
-  strictTest.call(null, 6, 5, 4, 3, 2, 1);
-  strictTest.call(null, 3, 2, 1);
-  O.strict.call(O);
-  O.strict.call(O, 2, 1);
-  O.strict.call(O, 6, 5, 4, 3, 2, 1);
-  O.strict.call(O, 3, 2, 1);
-})();
-
-
-(function testsloppyRestParamArity() {
-  assertEquals(2, sloppyTest.length);
-  assertEquals(2, O.sloppy.length);
-})();
-
-
-(function testRestParamsSloppyMode() {
-  sloppyTest();
-  sloppyTest(2, 1);
-  sloppyTest(6, 5, 4, 3, 2, 1);
-  sloppyTest(3, 2, 1);
-  O.sloppy();
-  O.sloppy(2, 1);
-  O.sloppy(6, 5, 4, 3, 2, 1);
-  O.sloppy(3, 2, 1);
-})();
-
-
-(function testRestParamssloppyModeApply() {
-  sloppyTest.apply(null, []);
-  sloppyTest.apply(null, [2, 1]);
-  sloppyTest.apply(null, [6, 5, 4, 3, 2, 1]);
-  sloppyTest.apply(null, [3, 2, 1]);
-  O.sloppy.apply(O, []);
-  O.sloppy.apply(O, [2, 1]);
-  O.sloppy.apply(O, [6, 5, 4, 3, 2, 1]);
-  O.sloppy.apply(O, [3, 2, 1]);
-})();
-
-
-(function testRestParamssloppyModeCall() {
-  sloppyTest.call(null);
-  sloppyTest.call(null, 2, 1);
-  sloppyTest.call(null, 6, 5, 4, 3, 2, 1);
-  sloppyTest.call(null, 3, 2, 1);
-  O.sloppy.call(O);
-  O.sloppy.call(O, 2, 1);
-  O.sloppy.call(O, 6, 5, 4, 3, 2, 1);
-  O.sloppy.call(O, 3, 2, 1);
-})();
-
-
-(function testUnmappedArguments() {
-  // Normal functions make their arguments object unmapped, but arrow
-  // functions don't have an arguments object anyway.  Check that the
-  // right thing happens for arguments in arrow functions with rest
-  // parameters.
-  assertSame(arguments, ((...rest) => arguments)());
-})();