Fix timout of packed-elements.js on ARM

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10703093

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11993 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/packed-elements.js

@@ -96,9 +96,9 @@ function test6() {
 function test_with_optimization(f) {
   // Run tests in a loop to make sure that inlined Array() constructor runs out
   // of new space memory and must fall back on runtime impl.
-  for (i = 0; i < 250000; ++i) f();
+  for (i = 0; i < 25000; ++i) f();
   %OptimizeFunctionOnNextCall(f);
-  for (i = 0; i < 250000; ++i) f(); // Make sure GC happens
+  for (i = 0; i < 25000; ++i) f(); // Make sure GC happens
 }
 
 if (has_packed_elements) {