Use the runtime for generic subsitution of variable types, return types, parameter types.

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index 16f2e2746acd14d228c7294e836b42c0823e58e8..6d2bfd0ba2f2cdae8ade752695d385858ecd6f13 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -29,7 +29,9 @@ mirrors/generic_function_typedef_test: RuntimeError # Issue 12333
 mirrors/generic_interface_test: RuntimeError # Issue 12087
 mirrors/generic_mixin_test: RuntimeError # Issue 12333
 mirrors/generic_mixin_applications_test: RuntimeError # Issue 12333
+mirrors/generic_type_mirror_test/01: RuntimeError # 6490
 mirrors/generics_substitution_test/01: RuntimeError # Issue 12087
+mirrors/generics_double_substitution_test: RuntimeError
 mirrors/hierarchy_invariants_test: RuntimeError # Issue 11863
 mirrors/immutable_collections_test: RuntimeError # Issue 14030
 mirrors/initializing_formals_test/01: RuntimeError # Issue 6490
@@ -79,7 +81,6 @@ mirrors/typedef_test/none: RuntimeError # http://dartbug.com/6490
 mirrors/typedef_metadata_test: RuntimeError # Issue 12785
 mirrors/typevariable_mirror_metadata_test: CompileTimeError # Issue 10905
 mirrors/type_variable_owner_test/01: RuntimeError # Issue 12785
-mirrors/generic_type_mirror_test/01: RuntimeError # 6490
 
 [ $runtime == safari ]
 mirrors/return_type_test: Pass, Timeout # Issue 12858
@@ -181,7 +182,7 @@ mirrors/typedef_test/01: Fail, OK # Incorrect dart2js behavior.
 
 mirrors/generic_f_bounded_test/01: RuntimeError # Issue 14000
 mirrors/generic_superclass_test/01: RuntimeError # Issue 14000
-mirrors/generic_type_mirror_test/02: RuntimeError # Issue 14613
+mirrors/generics_double_substitution_test/01: RuntimeError # Issue 14869
 
 mirrors/symbol_validation_test: RuntimeError # Issue 13596