Fix names of some tests in dart2js_extra.

tests/compiler/dart2js_extra/22776.dart

Index: tests/compiler/dart2js_extra/22776.dart
diff --git a/tests/compiler/dart2js_extra/22776.dart b/tests/compiler/dart2js_extra/22776.dart
deleted file mode 100644
index e9f12ea96362d55bb9fa50148f31bb5ea0c2e8d0..0000000000000000000000000000000000000000
--- a/tests/compiler/dart2js_extra/22776.dart
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// Regression test for http://dartbug.com/22776/
-
-import "package:expect/expect.dart";
-
-class A {}
-
-main() {
-  try {
-    print(id(new Duration(milliseconds: 10)));
-    print(id(3) ~/ new A());
-  } catch (e) {
-    print("Error '$e' ${e.runtimeType}");
-  }
-}
-
-@AssumeDynamic()
-@NoInline()
-id(x) => x;
-