Revert "[SAB] Move Atomics builtins to C++"

src/snapshot/natives-external.cc

Index: src/snapshot/natives-external.cc
diff --git a/src/snapshot/natives-external.cc b/src/snapshot/natives-external.cc
index 9439f4574da14366b5f1d8c603a089ff78f93146..6505d15571e870ae3edf70859890cbd1e38ea474 100644
--- a/src/snapshot/natives-external.cc
+++ b/src/snapshot/natives-external.cc
@@ -151,6 +151,8 @@ void ReadNatives() {
   if (natives_blob_ && NativesHolder<CORE>::empty()) {
     SnapshotByteSource bytes(natives_blob_->data, natives_blob_->raw_size);
     NativesHolder<CORE>::set(NativesStore::MakeFromScriptsSource(&bytes));
+    NativesHolder<EXPERIMENTAL>::set(
+        NativesStore::MakeFromScriptsSource(&bytes));
     NativesHolder<EXTRAS>::set(NativesStore::MakeFromScriptsSource(&bytes));
     NativesHolder<EXPERIMENTAL_EXTRAS>::set(
         NativesStore::MakeFromScriptsSource(&bytes));
@@ -179,6 +181,7 @@ void SetNativesFromFile(StartupData* natives_blob) {
  */
 void DisposeNatives() {
   NativesHolder<CORE>::Dispose();
+  NativesHolder<EXPERIMENTAL>::Dispose();
   NativesHolder<EXTRAS>::Dispose();
   NativesHolder<EXPERIMENTAL_EXTRAS>::Dispose();
 }
@@ -230,6 +233,7 @@ Vector<const char> NativesCollection<type>::GetScriptsSource() {
   template Vector<const char> NativesCollection<T>::GetScriptName(int i);   \
   template Vector<const char> NativesCollection<T>::GetScriptsSource();
 INSTANTIATE_TEMPLATES(CORE)
+INSTANTIATE_TEMPLATES(EXPERIMENTAL)
 INSTANTIATE_TEMPLATES(EXTRAS)
 INSTANTIATE_TEMPLATES(EXPERIMENTAL_EXTRAS)
 #undef INSTANTIATE_TEMPLATES