Replace long running loops by OptimizeFunctionOnNextCall in some tests.

test/mjsunit/closures.js

Index: test/mjsunit/closures.js
diff --git a/test/mjsunit/closures.js b/test/mjsunit/closures.js
index ee487a4b031af0fedec86ed49e33b12763dd6df7..7c1197107f7b73df789b87507c299ba67f728c2b 100644
--- a/test/mjsunit/closures.js
+++ b/test/mjsunit/closures.js
@@ -25,10 +25,10 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// Flags: --allow-natives-syntax
+
 function runner(f, expected) {
-  for (var i = 0; i < 1000000; i++) {
-    assertEquals(expected, f.call(this));
-  }
+  assertEquals(expected, f.call(this));
 }
 
 function test(n) {
@@ -36,6 +36,8 @@ function test(n) {
     var result = n * 2 + arguments.length;
     return result;
   }
+  for (var i = 0; i < 5; ++i) MyFunction();
+  %OptimizeFunctionOnNextCall(MyFunction)
   runner(MyFunction, n * 2);
 }