Synchronize with r15594.

test/intl/date-format/wellformed-unsupported-locale.js

Index: test/intl/date-format/wellformed-unsupported-locale.js
diff --git a/test/mjsunit/compiler/osr-one.js b/test/intl/date-format/wellformed-unsupported-locale.js
similarity index 90%
copy from test/mjsunit/compiler/osr-one.js
copy to test/intl/date-format/wellformed-unsupported-locale.js
index 2c27192d2773607f90aa508c466b12d9f6c3ca9f..8867ec644294ddc3e5ef8b8e8f5ac600284a91db 100644
--- a/test/mjsunit/compiler/osr-one.js
+++ b/test/intl/date-format/wellformed-unsupported-locale.js
@@ -25,16 +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: --use-osr
+// Passing a well formed but unsupported locale falls back to default.
 
-function f(x) {
-  var sum = 0;
-  var count = 10000000;
-  while (count > 0) {
-    sum += x;
-    count--;
-  }
-  return sum;
-}
+var dtf = Intl.DateTimeFormat(['xx']);
 
-assertEquals(50000000, f(5));
+assertEquals(dtf.resolvedOptions().locale, getDefaultLocale());