Add Smi::Zero and replace all Smi::FromInt(0) calls

src/builtins/builtins-function.cc

Index: src/builtins/builtins-function.cc
diff --git a/src/builtins/builtins-function.cc b/src/builtins/builtins-function.cc
index 0a631bff5cdb5242cb210cf5068936a53786e6b9..d6a3464eba538ab63a387759207ea326d2117656 100644
--- a/src/builtins/builtins-function.cc
+++ b/src/builtins/builtins-function.cc
@@ -198,7 +198,7 @@ Object* DoFunctionBind(Isolate* isolate, BuiltinArguments args) {
   if (!target->IsJSFunction() ||
       length_lookup.state() != LookupIterator::ACCESSOR ||
       !length_lookup.GetAccessors()->IsAccessorInfo()) {
-    Handle<Object> length(Smi::FromInt(0), isolate);
+    Handle<Object> length(Smi::kZero, isolate);
     Maybe<PropertyAttributes> attributes =
         JSReceiver::GetPropertyAttributes(&length_lookup);
     if (!attributes.IsJust()) return isolate->heap()->exception();