abstract eternal into class

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 0eb139ff27f51f3763d065f55f6105615d046308..d027d7a1a3e9e71033460eadb28b001c8711a25f 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -653,13 +653,16 @@ void V8::DisposeGlobal(i::Object** obj) {
 }
 
 
-int V8::Eternalize(i::Isolate* isolate, i::Object** handle) {
-  return isolate->eternal_handles()->Create(isolate, *handle);
+void V8::Eternalize(Isolate* v8_isolate, Value* value, int* index) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  i::Object* object = *Utils::OpenHandle(value);
+  isolate->eternal_handles()->Create(isolate, object, index);
 }
 
 
-i::Object** V8::GetEternal(i::Isolate* isolate, int index) {
-  return isolate->eternal_handles()->Get(index).location();
+Local<Value> V8::GetEternal(Isolate* v8_isolate, int index) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  return Utils::ToLocal(isolate->eternal_handles()->Get(index));
 }