Synchronize with r15594.

test/intl/overrides/webkit-tests.js

Index: test/intl/overrides/webkit-tests.js
diff --git a/test/mjsunit/compare-nil.js b/test/intl/overrides/webkit-tests.js
similarity index 86%
copy from test/mjsunit/compare-nil.js
copy to test/intl/overrides/webkit-tests.js
index 0895a31fb80cbe697b678eaa1005926d7d65829f..1429de62171314966e84c9aabb1f7eb9ed47efd8 100644
--- a/test/mjsunit/compare-nil.js
+++ b/test/intl/overrides/webkit-tests.js
@@ -25,12 +25,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
+// Makes sure we don't break affected WebKit tests.
 
-function test(v) {
-  return (v == null);
-}
-assertFalse(test(true));
-assertFalse(test(true));
-assertTrue(test(null));
-assertTrue(test(null));
+// Handles fast/js/string-prototype-properties.html
+assertThrows('String.prototype.localeCompare.call(undefined, \'1224\')');
+assertEquals(0, String.prototype.localeCompare.call(1224, '1224'));