dart2dart doesn't support reflection in minified mode.

dart/tests/lib/lib.status

 # Copyright (c) 2012, 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.
 
 [ $compiler == dart2js ]
 math/*: Skip
 mirrors/mirrors_test: Fail # TODO(ahe): I'm working on fixing this.
 mirrors/library_uri_io_test: Skip # Not intended for dart2js as it uses dart:io.
 async/run_async3_test: Fail # _enqueueImmediate runs after Timer. http://dartbug.com/9002
 async/run_async4_test: Pass, Fail # no global exception handler in isolates. http://dartbug.com/9012
@@ skipping 55 matching lines @@
 mirrors/mirrors_test: Fail              # Issue 10957
 mirrors/library_uri_package_test: Fail  # Issue 10957
 async/run_async6_test: Fail             # Issue 10957 - may be related to issue 10910
 
 [ $compiler == dart2dart && $minified ]
 json/json_test: Fail                           # Issue 10961
 typed_data/float32x4_test: Fail                # Issue 10961
 typed_data/float32x4_list_test: Fail           # Issue 10961
 typed_data/float32x4_unbox_phi_test: Fail      # Issue 10961
 typed_data/float32x4_unbox_regress_test: Fail  # Issue 10961
+mirrors/reflect_runtime_type_test: Fail
+mirrors/reflect_uninstantiated_class_test: Fail
+
 
 [ $runtime == safari]
  # Bug in JSC: the test only passes when being debugged.
 crypto/hmac_md5_test: Fail, Pass
 
 [ $runtime == ff ]
 # FF setTimeout can fire early: https://bugzilla.mozilla.org/show_bug.cgi?id=291386
 multiple_timer_test: Pass, Fail
 timer_isolate_test: Pass, Fail
 timer_test: Pass, Fail
@@ skipping 32 matching lines @@
 *: Skip
 
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip