Fix typeof optimization for undetectable

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index e7c650dd779a586077324f56c9b7575254d1dd92..ed1a04aa3b42632c7486defa186fb9e140754cf5 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -284,7 +284,7 @@ class Typer::Visitor : public Reducer {
   SIMPLIFIED_SPECULATIVE_NUMBER_BINOP_LIST(DECLARE_METHOD)
 #undef DECLARE_METHOD
 
-  static Type* ObjectIsCallable(Type*, Typer*);
+  static Type* ObjectIsDetectableCallable(Type*, Typer*);
   static Type* ObjectIsNonCallable(Type*, Typer*);
   static Type* ObjectIsNumber(Type*, Typer*);
   static Type* ObjectIsReceiver(Type*, Typer*);
@@ -503,9 +503,9 @@ Type* Typer::Visitor::ToString(Type* type, Typer* t) {
 
 // Type checks.
 
-Type* Typer::Visitor::ObjectIsCallable(Type* type, Typer* t) {
-  if (type->Is(Type::Callable())) return t->singleton_true_;
-  if (!type->Maybe(Type::Callable())) return t->singleton_false_;
+Type* Typer::Visitor::ObjectIsDetectableCallable(Type* type, Typer* t) {
+  if (type->Is(Type::DetectableCallable())) return t->singleton_true_;
+  if (!type->Maybe(Type::DetectableCallable())) return t->singleton_false_;
   return Type::Boolean();
 }
 
@@ -1901,8 +1901,8 @@ Type* Typer::Visitor::TypeStoreTypedElement(Node* node) {
   return nullptr;
 }
 
-Type* Typer::Visitor::TypeObjectIsCallable(Node* node) {
-  return TypeUnaryOp(node, ObjectIsCallable);
+Type* Typer::Visitor::TypeObjectIsDetectableCallable(Node* node) {
+  return TypeUnaryOp(node, ObjectIsDetectableCallable);
 }
 
 Type* Typer::Visitor::TypeObjectIsNonCallable(Node* node) {