Correctly minify named mixin applications in dart2dart.

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 527 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
 type_parameter_literal_test: Fail
 
 [ $compiler == dart2dart && $minified ]
 
-mixin_mixin_test: Fail
-mixin_field_test: Fail
-mixin_implements_test: Fail
-mixin_this_use_test: Fail
-mixin_naming_test: Fail
-mixin_is_test: Fail
-mixin_method_test: Fail
-mixin_illegal_super_use_test/none: Fail
-mixin_illegal_superclass_test/none: Fail
-
 # TODO(tball): Assign proper bug numbers.
 class_literal_test/none: Fail
 
 import_core_prefix_test: Pass
 prefix22_test: Pass
 invocation_mirror_test: Fail, OK # hardcoded names.
 invocation_mirror2_test: Fail, OK # hardcoded names.
 super_call4_test: Fail, OK # hardcoded names.
 
 [ $arch == arm ]
 *: Skip
 
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip