Revert "Snapshot i18n Javascript code" and "Fix mjsunit/debug-script after r16298".

src/extensions/i18n/header.js

Index: src/extensions/i18n/header.js
diff --git a/test/intl/date-format/utils.js b/src/extensions/i18n/header.js
similarity index 82%
copy from test/intl/date-format/utils.js
copy to src/extensions/i18n/header.js
index 535de15e9a2b4298cfc13d080b9fe620588f5b8e..1c0a2d8874b5aa982ca2be2fb39f2ead1c4a9622 100644
--- a/test/intl/date-format/utils.js
+++ b/src/extensions/i18n/header.js
@@ -24,13 +24,18 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// limitations under the License.
 
-// Utility methods for date testing.
+// ECMAScript 402 API implementation is broken into separate files for
+// each service. The build system combines them together into one
+// Intl namespace.
 
 /**
- * Returns date with timezone info forced into PDT.
+ * Intl object is a single object that has some named properties,
+ * all of which are constructors.
  */
-function usePDT(dateString) {
-  var removedTZ = dateString.replace(/(\+|-)\d{4}/, '-0007');
-  return removedTZ.replace(/\(.*?\)/, '(PDT)');
-}
+var Intl = (function() {
+
+'use strict';
+
+var Intl = {};