Fix cctest/test-heap/InstanceOfStubWriteBarrier when Crankshaft is disabled.

R=fschneider@chromium.org

Review URL: http://codereview.chromium.org/9188010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10394 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-heap.cc

@@ -1517,12 +1517,12 @@ TEST(LeakGlobalContextViaMapProto) {
 
 
 TEST(InstanceOfStubWriteBarrier) {
-  if (!i::FLAG_crankshaft) return;
   i::FLAG_allow_natives_syntax = true;
 #ifdef DEBUG
   i::FLAG_verify_heap = true;
 #endif
   InitializeVM();
+  if (!i::V8::UseCrankshaft()) return;
   v8::HandleScope outer_scope;
 
   {