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

tests/language/inline_getter_test.dart

 // 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.
 // Test inlining of instance getters.
 // Three classes access always the same field. Optimize method foo and inline
 // getter for classes 'A' and 'B'. Call later via 'C' 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 {
   int f;
   A(this.f) {}
   int foo() {
     return f;  // <-- inline getter for classes 'A' and 'B'.
   }
 }
@@ skipping 17 matching lines @@
     }
     var c = new C();
     sum += c.foo();  // <-- Deoptimizing.
     Expect.equals(70, sum);
   }
 }
 
 main() {
   InlineGetterTest.testMain();
 }