VM: Fix lazy_deopt_vm_test timeouts by limiting (re)optimizations to a single function.

tests/language/vm/lazy_deopt_vm_test.dart

Index: tests/language/vm/lazy_deopt_vm_test.dart
diff --git a/tests/language/vm/lazy_deopt_vm_test.dart b/tests/language/vm/lazy_deopt_vm_test.dart
index a10242a430556fd5e8cb6df06bc9d99d4b77f7df..17c7430855e62019d15574312f9652de9e9f1449 100644
--- a/tests/language/vm/lazy_deopt_vm_test.dart
+++ b/tests/language/vm/lazy_deopt_vm_test.dart
@@ -1,7 +1,7 @@
 // Copyright (c) 2016, 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=--deoptimize_every=10 --optimization-counter-threshold=10  --no-background-compilation
+// VMOptions=--optimization-filter=foo --deoptimize_every=10 --optimization-counter-threshold=10  --no-background-compilation
 
 // Test that lazy deoptimization on stack checks does not damage unoptimized
 // frame.