Add mirrors tests

test/codegen/lib/mirrors/class_mirror_location_other.dart

Index: test/codegen/lib/mirrors/class_mirror_location_other.dart
diff --git a/test/codegen/language/private_access_lib.dart b/test/codegen/lib/mirrors/class_mirror_location_other.dart
similarity index 63%
copy from test/codegen/language/private_access_lib.dart
copy to test/codegen/lib/mirrors/class_mirror_location_other.dart
index e9af62079d42b01f3f0ca4a9e4a055426a6ad53a..eb94d21d6ce68ee04f4dfd525708b60708426d63 100644
--- a/test/codegen/language/private_access_lib.dart
+++ b/test/codegen/lib/mirrors/class_mirror_location_other.dart
@@ -2,12 +2,10 @@
 // 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.
 
-library private;
+part of test.class_location;
 
-_function() {}
+class ClassInOtherFile {}
 
-class _Class {}
+  class SpaceIndentedInOtherFile {}
 
-class Class {
-  Class._constructor();
-}
+	class TabIndentedInOtherFile {}