Migrated several tests from blink to V8 repository.

test/webkit/date-DST-pre-1970.js

Index: test/webkit/date-DST-pre-1970.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/date-DST-pre-1970.js
similarity index 79%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/date-DST-pre-1970.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..a8ac4e72b2400ddd1ad9c9268790a791ea4858a0 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/date-DST-pre-1970.js
@@ -22,10 +22,9 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"This tests the DST status in dates earlier than 1970-01-01 00:00 UTC. Regardless of your time zone, it should not fail. This tests time zones: US/Pacific, US/Central, US/Mountain, US/Eastern, CET, Asia/Jerusalem and NZ."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
-
-
+shouldBe("(new Date(1970, 0, 1)).getHours()", "0");
+shouldBe("(new Date(1969, 8, 1)).getHours()", "0");
+shouldBe("(new Date(1969, 9, 28)).getHours()", "0");