Restructure outline shaker tests.

pkg/front_end/testcases/shaker/transitive_class_type_parameter_bound_lib.dart

Index: pkg/front_end/testcases/shaker/transitive_class_type_parameter_bound_lib.dart
diff --git a/pkg/front_end/testcases/shaker/include_field_type.dart b/pkg/front_end/testcases/shaker/transitive_class_type_parameter_bound_lib.dart
similarity index 82%
rename from pkg/front_end/testcases/shaker/include_field_type.dart
rename to pkg/front_end/testcases/shaker/transitive_class_type_parameter_bound_lib.dart
index f7c77d5825a3fe8da66efc1c4d0587a43f278fe0..ef3ade94d36b6469aa2c7151568950ea6e327596 100644
--- a/pkg/front_end/testcases/shaker/include_field_type.dart
+++ b/pkg/front_end/testcases/shaker/transitive_class_type_parameter_bound_lib.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
-import 'lib/lib.dart';
+class A {}
 
-foo(F x) => x.field;
+class B<T extends A> {}
+
+class C {}