[stubs] Improve code generation for ToBoolean.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 95b6c36dd19bb9907a2cb888a2cff856bb983c6a..80138814ea74ccd9bfe51dfd0c823734eedac1bf 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -12626,13 +12626,12 @@ Handle<String> JSFunction::ToString(Handle<JSFunction> function) {
 
 void Oddball::Initialize(Isolate* isolate, Handle<Oddball> oddball,
                          const char* to_string, Handle<Object> to_number,
-                         bool to_boolean, const char* type_of, byte kind) {
+                         const char* type_of, byte kind) {
   Handle<String> internalized_to_string =
       isolate->factory()->InternalizeUtf8String(to_string);
   Handle<String> internalized_type_of =
       isolate->factory()->InternalizeUtf8String(type_of);
   oddball->set_to_number_raw(to_number->Number());
-  oddball->set_to_boolean(isolate->heap()->ToBoolean(to_boolean));
   oddball->set_to_number(*to_number);
   oddball->set_to_string(*internalized_to_string);
   oddball->set_type_of(*internalized_type_of);