Express LoadIC extra ic state with LoadIC::State

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index 91cb3870df97e330b9c960655458fd06fd732c90..06c160485342945260c741abba5df1f8c661b9f5 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -559,11 +559,11 @@ RUNTIME_FUNCTION(LoadPropertyWithInterceptorOnly) {
 
 
 static Object* ThrowReferenceError(Isolate* isolate, Name* name) {
-  // If the load is non-contextual, just return the undefined result.
+  // If the load is inside typeof, just return the undefined result.
   // Note that both keyed and non-keyed loads may end up here.
   HandleScope scope(isolate);
   LoadIC ic(IC::NO_EXTRA_FRAME, isolate);
-  if (ic.contextual_mode() != CONTEXTUAL) {
+  if (ic.typeof_state() == INSIDE_TYPEOF) {
     return isolate->heap()->undefined_value();
   }