Add --no-background-compilation to tests that expect to run code in optimized form

tests/language/try_catch_test.dart

Index: tests/language/try_catch_test.dart
diff --git a/tests/language/try_catch_test.dart b/tests/language/try_catch_test.dart
index fb3630033abb8ed735ec6f6a160d4343903046e1..dcf4cba4b867d25defb745edeefd1d8a8f33186d 100644
--- a/tests/language/try_catch_test.dart
+++ b/tests/language/try_catch_test.dart
@@ -1,7 +1,7 @@
 // Copyright (c) 2011, 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.
-// VMOptions=--optimization-counter-threshold=10
+// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
 
 import "package:expect/expect.dart";
 
@@ -172,7 +172,7 @@ class TryCatchTest {
       Expect.fail("unreachable");
     }
   }
-      
+
 
   static void testMain() {
     test1();