Merge kernel closure conversion into the Dart SDK

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index a4a5ef4ba77e8843f5560e4bd438d0380c4b8a70..6d02e8a4c3861e89fd1f060a4a707491fa154b15 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -19,6 +19,12 @@ dart_messages/test/dart_messages_test: Skip  # Requires a package root.
 # Skip dev_compiler codegen tests
 dev_compiler/test/codegen/*: Skip
 
+[ $runtime == vm && $mode == release && $system == linux ]
+kernel/test/closures_test: Slow, Pass
+
+[ $runtime != vm || $mode != release || $system != linux ]
+kernel/test/closures_test: Skip
+
 # Analyze dev_compiler but don't run its tests
 [ $compiler != dart2analyzer ]
 dev_compiler/test/*: Skip