Improve a reason for failure.

tests/language/language.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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 176 matching lines @@
 final_syntax_test/03: Fail
 final_syntax_test/04: Fail
 # Call operator is not supported by DartVM (see suppression above.)
 call_operator_test: Fail
 # dart2js frontend doesn't even analyse problematic classes.
 class_extends_negative_test: Fail
 duplicate_implements_test/01: Fail
 duplicate_implements_test/02: Fail
 duplicate_implements_test/03: Fail
 duplicate_implements_test/04: Fail
+method_override2_test/00: Fail
+method_override2_test/02: Fail
+method_override2_test/03: Fail
 # Bug in dart2js frontend: cannot find the constructor.
 default_factory_library_test: Fail
 # Common with language_dart2js.
 function_type_alias3_test: Fail
 function_type_alias5_test/00: Fail
 function_type_alias5_test/01: Fail
 function_type_alias5_test/02: Fail
 function_type_alias7_test/00: Fail
 function_type_parameter2_test: Fail
 function_type_parameter_test: Fail
 get_set_syntax_test/none: Fail
 implicit_scope_test: Fail
 instanceof3_test: Fail
 library_prefixes_test: Fail
 method_name_test: Fail
 numbers_test: Fail
 # DartVM problem.
 closure_with_super_send_test: Fail
 constructor5_test: Fail
 constructor6_test: Fail
 fauxverride_test/none: Fail
 gc_test: Fail
 prefix_core_test: Fail
 super_closure_test: Fail
 super_field_access_test: Fail
 super_first_constructor_test: Fail
 # Triaged.
-method_override2_test/00: Fail # Must provide compiler errors, not currently supported by framework.
-method_override2_test/02: Fail # Must provide compiler errors, not currently supported by framework.
-method_override2_test/03: Fail # Must provide compiler errors, not currently supported by framework.
 syntax_test/47: Fail  # We should get compile-time error on const constructor having body. But we don't emit default constructors with empty body.
 # Should be triaged.
 ct_const2_test: Fail, Pass
 disable_privacy_test: Fail
 empty_body_member_negative_test: Fail
 factory4_test: Fail
 field2_negative_test: Fail
 field4_negative_test: Fail
 field5_negative_test: Fail
 field6a_negative_test: Fail
@@ skipping 17 matching lines @@
 prefix20_negative_test: Fail
 static_final_field_negative_test: Fail
 static_implicit_closure_test: Fail, Pass
 static_top_level_test/00: Fail
 static_top_level_test/01: Fail
 static_top_level_test/02: Fail
 static_top_level_test/03: Fail
 static_top_level_test/04: Fail
 static_top_level_test/05: Fail
 switch_label_test: Fail