Remove deprecated v8::base::OS::nan_value().

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 7a3057ae634c2df6aae7063f064608838f2a39c2..4601bd127076246d34ed55f991a7c3cc795030d1 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -14935,7 +14935,7 @@ Handle<Object> ExternalFloat32Array::SetValue(
     Handle<ExternalFloat32Array> array,
     uint32_t index,
     Handle<Object> value) {
-  float cast_value = static_cast<float>(base::OS::nan_value());
+  float cast_value = std::numeric_limits<float>::quiet_NaN();
   if (index < static_cast<uint32_t>(array->length())) {
     if (value->IsSmi()) {
       int int_value = Handle<Smi>::cast(value)->value();
@@ -14958,7 +14958,7 @@ Handle<Object> ExternalFloat64Array::SetValue(
     Handle<ExternalFloat64Array> array,
     uint32_t index,
     Handle<Object> value) {
-  double double_value = base::OS::nan_value();
+  double double_value = std::numeric_limits<double>::quiet_NaN();
   if (index < static_cast<uint32_t>(array->length())) {
     if (value->IsNumber()) {
       double_value = value->Number();