Return v8::Date specialization not v8::Value where possible

fxjs/fxjs_v8.cpp

Index: fxjs/fxjs_v8.cpp
diff --git a/fxjs/fxjs_v8.cpp b/fxjs/fxjs_v8.cpp
index 65778859a308612e6ba4dbb0501efd5d5a13882d..d161af62819c68fe5b69d556c8e9457dfb6afa25 100644
--- a/fxjs/fxjs_v8.cpp
+++ b/fxjs/fxjs_v8.cpp
@@ -758,8 +758,10 @@ v8::Local<v8::Value> FXJS_NewNull(v8::Isolate* pIsolate) {
   return v8::Local<v8::Value>();
 }
 
-v8::Local<v8::Value> FXJS_NewDate(v8::Isolate* pIsolate, double d) {
-  return v8::Date::New(pIsolate->GetCurrentContext(), d).ToLocalChecked();
+v8::Local<v8::Date> FXJS_NewDate(v8::Isolate* pIsolate, double d) {
+  return v8::Date::New(pIsolate->GetCurrentContext(), d)
+      .ToLocalChecked()
+      .As<v8::Date>();
 }
 
 int FXJS_ToInt32(v8::Isolate* pIsolate, v8::Local<v8::Value> pValue) {
@@ -807,7 +809,3 @@ v8::Local<v8::Array> FXJS_ToArray(v8::Isolate* pIsolate,
   v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
   return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
 }
-
-void FXJS_ValueCopy(v8::Local<v8::Value>& pTo, v8::Local<v8::Value> pFrom) {
-  pTo = pFrom;
-}