Migrate more tests from blink repository.

test/webkit/fast/js/date-preserve-milliseconds-expected.txt

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-This test checks the behaviour of indexing an Array with immediate types.
+The following test checks if an existing milliseconds value gets preserved if a call to setHours(), setMinutes() or setSeconds() does not specify the milliseconds. See https://bugs.webkit.org/show_bug.cgi?id=3759
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS array[0] is "Zero"
-PASS array[null] is undefined
-PASS array[undefined] is undefined
-PASS array[true] is undefined
-PASS array[false] is undefined
-PASS putSelf([0], 0); is true
-PASS putSelf([0], 1/9); is true
+PASS d.getMilliseconds() is 1
+PASS d.getMilliseconds() is 1
+PASS d.getMilliseconds() is 1
+PASS d.getMilliseconds() is 1
+PASS d.getMilliseconds() is 1
+PASS d.getMilliseconds() is 1
 PASS successfullyParsed is true
 
 TEST COMPLETE