[es6] Ship rest parameters.

test/mjsunit/harmony/spread-call.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-spreadcalls
+// Flags: --harmony-spread-calls
 
 (function testSpreadCallsStrict() {
   "use strict"
   function countArgs() { return arguments.length; }
 
   // Test this argument
   function returnThis() { return this; }
   assertEquals(void 0, returnThis(..."test"));
 
   // Test argument counting with different iterables
@@ skipping 349 matching lines @@
 
   assertEquals(3, returnCountStrict(...[1]));
   assertEquals(4, returnCountStrict(1, ...[2]));
   assertEquals(5, returnCountStrict(1, ...[2], 3));
   assertEquals(3, returnCountSloppy(...[1]));
   assertEquals(4, returnCountSloppy(1, ...[2]));
   assertEquals(5, returnCountSloppy(1, ...[2], 3));
 
   Object.defineProperty(Array.prototype, Symbol.iterator, origIterator);
 })();