Add missing test coverage for constructor kinds, generic function typedefs and generic mixin applic…

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index 5ba77acd6b5746e5d9a619a1b52daddf99aef766..2cd04519fc0353944d0f03120541f03b7dea25e4 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -7,10 +7,13 @@ math/double_pow_test: RuntimeError
 math/low_test: RuntimeError
 math/random_test: RuntimeError
 mirrors/closure_mirror_find_in_context_test: Fail # Issue 6490
+mirrors/constructor_kinds_test: RuntimeError
 mirrors/equality_test/02: RuntimeError # Issue 12333
 mirrors/fake_function_test: RuntimeError # Issue 11612
 mirrors/function_type_mirror_test: RuntimeError # Issue 12166
 mirrors/generics_test/01: RuntimeError # Issue 12333
+mirrors/generic_function_typedef_test: RuntimeError
+mirrors/generic_mixin_applications_test: RuntimeError
 mirrors/hierarchy_invariants_test: RuntimeError # Issue 11863
 mirrors/invoke_test: RuntimeError # Issue 11954
 mirrors/invoke_closurization_test: RuntimeError # Issue 13002
@@ -143,6 +146,8 @@ mirrors/hierarchy_test: Fail # TODO(ahe): This test is slightly broken. http://d
 mirrors/mixin_test/01: 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/generic_function_typedef_test: RuntimeError
+mirrors/constructor_kinds_test: RuntimeError
 
 [ $compiler == none && $runtime == drt ]
 async/timer_isolate_test: Skip # See Issue 4997