Add test for ClassMirror.mixin. Rename the mixin application test.

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.
 
 [ $csp ]
 mirrors/delegate_test: RuntimeError # Issue 13864
 
 [ $compiler == dart2js ]
 async/schedule_microtask3_test: RuntimeError # _enqueueImmediate runs after Timer. http://dartbug.com/9002
 async/schedule_microtask4_test: Pass, RuntimeError # no global exception handler in isolates. http://dartbug.com/9012
@@ skipping 31 matching lines @@
 mirrors/invoke_named_test/none: RuntimeError # Issue 12863
 mirrors/invoke_private_test: CompileTimeError # Issue 12164
 mirrors/invoke_throws_test: RuntimeError # Issue 11954
 mirrors/library_metadata2_test/01: CompileTimeError # Issue 13633
 mirrors/library_uri_io_test: Skip # Not intended for dart2js as it uses dart:io.
 mirrors/method_mirror_name_test: RuntimeError # Issue 6335
 mirrors/method_mirror_properties_test: RuntimeError # Issue 11861
 mirrors/method_mirror_returntype_test : RuntimeError # Issue 11928
 mirrors/method_mirror_source_test : RuntimeError # Issue 6490
 mirrors/mirrors_test: RuntimeError # TODO(ahe): I'm working on fixing this.
-mirrors/mixin_test/none: RuntimeError # Issue 12464
+mirrors/mixin_test: RuntimeError # Issue 12464
+mirrors/mixin_application_test/none: RuntimeError # Issue 12464
 mirrors/new_instance_with_type_arguments_test: RuntimeError # Issue 12333
 mirrors/null_test : RuntimeError # Issue 12129
 mirrors/parameter_test/none: RuntimeError # Issue 6490
 mirrors/parameter_metadata_test: CompileTimeError # Issue 10905
 mirrors/private_symbol_test: CompileTimeError # Issue 13597
 mirrors/proxy_type_test: RuntimeError # Issue 13842
 mirrors/redirecting_factory_test/none: RuntimeError # Issue 6490
 mirrors/redirecting_factory_test/02: RuntimeError # Issue 6490
 mirrors/reflected_type_test: RuntimeError # Issue 12607
 mirrors/symbol_validation_test: RuntimeError # Issue 13597
@@ skipping 98 matching lines @@
 # TODO(efortuna): Investigate.
 async/timer_test: Fail, Pass
 
 [ $runtime == vm ]
 async/timer_not_available_test: Fail, OK 
 mirrors/native_class_test: Fail, OK # This test is meant to run in a browser.
 
 [ $compiler == none  ]
 async/schedule_microtask3_test: Fail # _enqueueImmediate runs after Timer. http://dartbug.com/9001.
 mirrors/hierarchy_test: Fail # TODO(ahe): This test is slightly broken. http://dartbug.com/12464
-mirrors/mixin_test/01: Fail, OK # TODO(ahe): Slight broken test to ensure test coverage on dart2js.
+mirrors/mixin_application_test/01: Fail, OK # TODO(ahe): Slight broken test to ensure test coverage on dart2js.
 mirrors/intercepted_object_test: Fail, OK # TODO(ahe): Slight broken test to ensure test coverage on dart2js.
 mirrors/typedef_test/01: Fail, OK # Incorrect dart2js behavior.
 mirrors/closures_test/01: Fail, OK # Incorrect dart2js behavior.
 
 mirrors/basic_types_in_dart_core_test/01: RuntimeError # Issue 12141
 mirrors/generic_function_typedef_test: RuntimeError # Issue 12282
 mirrors/generic_f_bounded_test: RuntimeError # Issue 14000
 mirrors/immutable_collections_test: RuntimeError # Issue 14027
 mirrors/symbol_validation_test: RuntimeError # Issue 13596
 
@@ skipping 40 matching lines @@
 mirrors/generic_bounded_test/none: Fail # Issue 13432
 mirrors/generic_bounded_by_type_parameter_test/none: Fail # Issue 13432
 mirrors/invoke_named_test/none: Fail # http://dartbug.com/13612
 
 [ $compiler == none && $runtime == dartium ]
 async/schedule_microtask5_test: Pass, Timeout # Issue 13719: Please triage this failure.
 async/timer_cancel2_test: Pass, Timeout # Issue 13719: Please triage this failure.
 
 [ $runtime != none ]
 async/schedule_microtask_test: Fail # Issue 9001, Issue 9002