Rename DateTime constants to full names.

tests/standalone/io/http_advanced_test.dart

Index: tests/standalone/io/http_advanced_test.dart
diff --git a/tests/standalone/io/http_advanced_test.dart b/tests/standalone/io/http_advanced_test.dart
index 76ffd8c059978e1e4899bb131a1c30d6d20ede48..1d4ca8976bdcaad848d4bc4437c66e08d51d7816 100644
--- a/tests/standalone/io/http_advanced_test.dart
+++ b/tests/standalone/io/http_advanced_test.dart
@@ -124,7 +124,7 @@ class TestServer {
   // Set the "Expires" header using the expires property.
   void _expires1Handler(HttpRequest request) {
     var response = request.response;
-    DateTime date = new DateTime.utc(1999, DateTime.JUN, 11, 18, 46, 53, 0);
+    DateTime date = new DateTime.utc(1999, DateTime.JUNE, 11, 18, 46, 53, 0);
     response.headers.expires = date;
     Expect.equals(date, response.headers.expires);
     response.close();
@@ -134,7 +134,7 @@ class TestServer {
   void _expires2Handler(HttpRequest request) {
     var response = request.response;
     response.headers.set("Expires", "Fri, 11 Jun 1999 18:46:53 GMT");
-    DateTime date = new DateTime.utc(1999, DateTime.JUN, 11, 18, 46, 53, 0);
+    DateTime date = new DateTime.utc(1999, DateTime.JUNE, 11, 18, 46, 53, 0);
     Expect.equals(date, response.headers.expires);
     response.close();
   }
@@ -170,7 +170,7 @@ class TestServer {
     Expect.equals(0, request.cookies.length);
 
     Cookie cookie1 = new Cookie("name1", "value1");
-    DateTime date = new DateTime.utc(2014, DateTime.JAN, 5, 23, 59, 59, 0);
+    DateTime date = new DateTime.utc(2014, DateTime.JANUARY, 5, 23, 59, 59, 0);
     cookie1.expires = date;
     cookie1.domain = "www.example.com";
     cookie1.httpOnly = true;
@@ -293,7 +293,7 @@ Future testExpires() {
       Expect.equals(HttpStatus.OK, response.statusCode);
       Expect.equals("Fri, 11 Jun 1999 18:46:53 GMT",
                     response.headers["expires"][0]);
-      Expect.equals(new DateTime.utc(1999, DateTime.JUN, 11, 18, 46, 53, 0),
+      Expect.equals(new DateTime.utc(1999, DateTime.JUNE, 11, 18, 46, 53, 0),
                     response.headers.expires);
       response.listen((_) { },
                       onDone: () {
@@ -380,7 +380,7 @@ Future testCookies() {
             if (cookie.name == "name1") {
               Expect.equals("value1", cookie.value);
               DateTime date =
-                  new DateTime.utc(2014, DateTime.JAN, 5, 23, 59, 59, 0);
+                  new DateTime.utc(2014, DateTime.JANUARY, 5, 23, 59, 59, 0);
               Expect.equals(date, cookie.expires);
               Expect.equals("www.example.com", cookie.domain);
               Expect.isTrue(cookie.httpOnly);