Migrated test block 220 to Dart 2.0.

tests/lib_2/lib_2_dart2js.status

Index: tests/lib_2/lib_2_dart2js.status
diff --git a/tests/lib_2/lib_2_dart2js.status b/tests/lib_2/lib_2_dart2js.status
index e05cbe35cc84f813799579db03a9f7eeede1d836..3a2ba91319f914c52deb065899ae30650316f700 100644
--- a/tests/lib_2/lib_2_dart2js.status
+++ b/tests/lib_2/lib_2_dart2js.status
@@ -10,9 +10,16 @@ async/catch_errors20_test: Fail # Timer interface not supported: Issue 7728.
 async/catch_errors28_test: Fail # Timer interface not supported: Issue 7728.
 async/future_test: RuntimeError # Timer interface not supported; Issue 7728.
 async/future_constructor2_test: Fail # Timer interface not supported: Issue 7728.
+mirrors/*: Skip # Mirrors not supported on jsshell.
+
+[ $compiler == dart2js && $runtime == d8 ]
+mirrors/*: Skip # Mirrors not supported on d8.

[rmacnak, 2017/08/22 17:05:14]

These tests should not be categorically skipped on d8 or jsshell. Nothing about
them prevents dart2js from implementing mirrors, and dart2js previously has run
these tests there.

[Bob Nystrom, 2017/08/23 22:24:31]

My understanding is the leads have decided mirrors will not be supported on
dart4web in 2.0, so we should mark everything in mirrors/* as SkipByDesign on
dart2js and dartdevc.

[rmacnak, 2017/08/23 23:33:03]

As long as we are shipping a Dart 1 SDK, we must maintain test coverage.

 
 [ $compiler == dart2js ]
 async/future_or_strong_test: RuntimeError
+mirrors/generic_local_function_test: RuntimeError # Issue 12333
+mirrors/generic_mixin_test: RuntimeError # Issue 12333
+mirrors/generic_mixin_applications_test: RuntimeError # Issue 12333
 
 [ $compiler != dart2js ]
 async/dart2js_uncaught_error_test: Skip  # JS-integration only test