dart2js CPS: Mark a test that sometimes times out.
R=asgerf@google.com
BUG=
Review URL: https://codereview.chromium.org//1343383002 .
diff --git a/tests/utils/utils.status b/tests/utils/utils.status
index f793816..77594d3 100644
--- a/tests/utils/utils.status
+++ b/tests/utils/utils.status
@@ -31,4 +31,4 @@
[ $compiler == dart2js && $cps_ir ]
dummy_compiler_test: Crash # (switch (function.na... continue to a labeled switch case
recursive_import_test: Crash # (switch (function.na... continue to a labeled switch case
-source_mirrors_test: Crash # (switch (function.na... continue to a labeled switch case
+source_mirrors_test: Crash, Slow # (switch (function.na... continue to a labeled switch case
