Revert of [ic] [stubs] Don't use Code::flags in megamorphic stub cache hash computations.

src/ic/ic.cc

Index: src/ic/ic.cc
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index ce9f328f07eafde6472253c824e9d0887e282cf9..f9428917ea4f197a5195989c4a5ecdd180f7d2f8 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -1024,7 +1024,8 @@
       // cache (which just missed) is different from the cached handler.
       if (state() == MEGAMORPHIC && lookup->GetReceiver()->IsHeapObject()) {
         Map* map = Handle<HeapObject>::cast(lookup->GetReceiver())->map();
-        Code* megamorphic_cached_code = stub_cache()->Get(*lookup->name(), map);
+        Code* megamorphic_cached_code =
+            stub_cache()->Get(*lookup->name(), map, code->flags());
         if (megamorphic_cached_code != *code) {
           TRACE_HANDLER_STATS(isolate(), IC_HandlerCacheHit);
           return code;