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

tests/language/inline_test_context_test.dart

 // 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.
 // Test inlining of simple function with control flow in a test context.
 // Optimize function foo with instance of A and inlined function bar. Call later
 // with instance of B and cause deoptimization.
-// VMOptions=--optimization-counter-threshold=10 --no-use-osr
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation
 
 import "package:expect/expect.dart";
 
 class A {
   var x = 1;
 }
 
 class B {
   var x = 0;
 }
@@ skipping 15 matching lines @@
 }
 
 main() {
   var o = new A();
   int sum = 0;
   for (int i = 0; i < 20; i++) sum += foo(o);
   o = new B();
   sum += foo(o);  // <-- Cause deoptimization of bar within foo.
   Expect.equals(20, sum);
 }