Fix mjsunit's assertOptimized and assertUnoptimized.

test/mjsunit/mjsunit-assertoptimized.js

Index: test/mjsunit/mjsunit-assertoptimized.js
diff --git a/test/mjsunit/mjsunit-assertoptimized.js b/test/mjsunit/mjsunit-assertoptimized.js
new file mode 100644
index 0000000000000000000000000000000000000000..d395012f3c9a9dc85a4d1849f0a5ce1f495b6215
--- /dev/null
+++ b/test/mjsunit/mjsunit-assertoptimized.js
@@ -0,0 +1,17 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --crankshaft
+
+function f() {};
+f();
+f();
+%OptimizeFunctionOnNextCall(f);
+f();
+assertOptimized(f);
+assertThrows(function() { assertUnoptimized(f); });
+%DeoptimizeFunction(f);
+assertUnoptimized(f);
+assertThrows(function() { assertOptimized(f); });
+quit();  // Prevent stress runs.