[builtins] Refactor the remaining Date builtins.

test/mjsunit/date.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 128 matching lines @@
 var k = new Date();
 k.setMilliseconds();
 k.setMilliseconds(2);
 assertTrue(isNaN(k.getMilliseconds()));
 
 var l = new Date();
 l.setUTCMilliseconds();
 l.setUTCMilliseconds(2);
 assertTrue(isNaN(l.getUTCMilliseconds()));
 
-// Test that toLocaleTimeString only returns the time portion of the
-// date without the timezone information.
-function testToLocaleTimeString() {
-  var d = new Date();
-  var s = d.toLocaleTimeString("en-GB");
-  assertEquals(8, s.length);
-}
-
-testToLocaleTimeString();
-
 // Test that -0 is treated correctly in MakeDay.
 var d = new Date();
 assertDoesNotThrow("d.setDate(-0)");
 assertDoesNotThrow("new Date(-0, -0, -0, -0, -0, -0, -0)");
 assertDoesNotThrow("new Date(0x40000000, 0x40000000, 0x40000000," +
                    "0x40000000, 0x40000000, 0x40000000, 0x40000000)")
 assertDoesNotThrow("new Date(-0x40000001, -0x40000001, -0x40000001," +
                    "-0x40000001, -0x40000001, -0x40000001, -0x40000001)")
 
 
@@ skipping 176 matching lines @@
 delete Date.prototype.getUTCHours;
 delete Date.prototype.getUTCMinutes;
 delete Date.prototype.getUTCSeconds;
 delete Date.prototype.getUTCMilliseconds;
 (new Date()).toISOString();
 
 (function TestDeleteToString() {
   assertTrue(delete Date.prototype.toString);
   assertTrue('[object Date]' !== Date());
 })();