Revert "Ignore dev_compiler gen directory when running tests."

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
@@ skipping 11 matching lines @@
 [ $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
 
-# Don't run the dev_compiler generated tests
+[ $compiler == dart2analyzer ]
 dev_compiler/gen/*: SkipByDesign
 dev_compiler/test/options/*: SkipByDesign
 
 # Issue #28236
 analysis_server/test/analysis/get_errors_test: StaticWarning
 analysis_server/test/analysis/get_hover_test: StaticWarning
 analysis_server/test/analysis/get_navigation_test: StaticWarning
 analysis_server/test/analysis/navigation_collector_test: StaticWarning
 analysis_server/test/analysis/notification_analysis_options_test: StaticWarning
 analysis_server/test/analysis/notification_analyzedFiles_test: StaticWarning
@@ skipping 452 matching lines @@
 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
 
 [ $compiler == none ]
 kernel/test/closures_test: Fail