Merge kernel closure conversion into the Dart SDK

pkg/pkg.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
 */*/*/*/packages/*/*: Skip
 */*/*/*/*/packages/*/*: Skip
 
 # Analyzer2dart is not maintained anymore.
 analyzer2dart/test/*: Skip
 
 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
 
 [ $compiler == dart2analyzer ]
 dev_compiler/gen/*: SkipByDesign
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium) ]
 mutation_observer: Skip # Issue 21149
 unittest/*: Skip # Issue 21949
@@ skipping 163 matching lines @@
 analyzer/test/src/task/strong/checker_test: Crash # Issue 24485
 analyzer/test/src/task/strong/inferred_type_test: Crash # Issue 24485
 analyzer/test/src/task/strong_mode_test: Crash # Issue 24485
 analyzer/test/src/task/yaml_test: Crash # Issue 24485
 
 [ $noopt || $runtime == dart_precompiled ]
 *: SkipByDesign # The pkg test framework imports dart:mirrors.
 
 [ $compiler == dart2js && $cps_ir && $checked ]
 *: Skip # `assert` not implemented, about 75% tests crash