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

src/builtins/builtins-dataview.cc

Index: src/builtins/builtins-dataview.cc
diff --git a/src/builtins/builtins-dataview.cc b/src/builtins/builtins-dataview.cc
index 3d14e31d3a3ba377f47eb2dc2b46e66461169849..7eb7f534a42ac4e16c7ec495fb100a313d1c8744 100644
--- a/src/builtins/builtins-dataview.cc
+++ b/src/builtins/builtins-dataview.cc
@@ -88,7 +88,7 @@ BUILTIN(DataViewConstructor_ConstructStub) {
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
                                      JSObject::New(target, new_target));
   for (int i = 0; i < ArrayBufferView::kInternalFieldCount; ++i) {
-    Handle<JSDataView>::cast(result)->SetInternalField(i, Smi::FromInt(0));
+    Handle<JSDataView>::cast(result)->SetInternalField(i, Smi::kZero);
   }
 
   // 12. Set O's [[ViewedArrayBuffer]] internal slot to buffer.