Issue 6866. Report not-implemented-in-concrete class warnings if there are members without body.

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 320 matching lines @@
 private_member3_negative_test: Pass
 private_member_test: Fail, OK
 top_level_prefixed_declaration_test: Fail, OK
 typed_message_test: Fail, OK
 
 
 # test issue 6818
 type_variable_identifier_expression_negative_test: Fail, OK
 
 # test issue 6866
-abstract_factory_constructor_test/00: Fail, OK
+abstract_factory_constructor_test/none: Fail
+abstract_syntax_test/none: Fail
+get_set_syntax_test/none: Fail
 
 
 #
 # Add new dartc annotations above in alphabetical order
 #
 
 # VM specific tests that should not be run by DartC.
 *vm_test: Skip
 *vm_negative_test: Skip
 
@@ skipping 238 matching lines @@
 compile_time_constant_checked3_test/03: Fail, OK
 compile_time_constant_checked3_test/04: Fail, OK
 compile_time_constant_checked3_test/05: Fail, OK
 compile_time_constant_checked3_test/06: Fail, OK
 
 type_error_test: Fail, OK # VM bug: http://dartbug.com/5280
 
 # This is a VM error when the compiled code is run.
 invocation_mirror_test: Fail # issue 3326, 3622.
 invocation_mirror_indirect_test: Fail # issue 3326, 3622.