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

src/runtime/runtime-i18n.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 #ifdef V8_I18N_SUPPORT
 #include "src/runtime/runtime-utils.h"
 
 #include <memory>
 
@@ skipping 1265 matching lines @@
                            reinterpret_cast<const char*>(lang_str));
 }
 
 RUNTIME_FUNCTION(Runtime_DateCacheVersion) {
   HandleScope scope(isolate);
   DCHECK_EQ(0, args.length());
   if (isolate->serializer_enabled()) return isolate->heap()->undefined_value();
   if (!isolate->eternal_handles()->Exists(EternalHandles::DATE_CACHE_VERSION)) {
     Handle<FixedArray> date_cache_version =
         isolate->factory()->NewFixedArray(1, TENURED);
-    date_cache_version->set(0, Smi::FromInt(0));
+    date_cache_version->set(0, Smi::kZero);
     isolate->eternal_handles()->CreateSingleton(
         isolate, *date_cache_version, EternalHandles::DATE_CACHE_VERSION);
   }
   Handle<FixedArray> date_cache_version =
       Handle<FixedArray>::cast(isolate->eternal_handles()->GetSingleton(
           EternalHandles::DATE_CACHE_VERSION));
   return date_cache_version->get(0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_I18N_SUPPORT