Add a mode to completely deserialize scope chains

src/compiler-dispatcher/compiler-dispatcher-job.cc

Index: src/compiler-dispatcher/compiler-dispatcher-job.cc
diff --git a/src/compiler-dispatcher/compiler-dispatcher-job.cc b/src/compiler-dispatcher/compiler-dispatcher-job.cc
index fbf91ab7417a905805a7dd7aff968936798bf883..41805b44233ec5d6d9cf5726d31b47669e08a69c 100644
--- a/src/compiler-dispatcher/compiler-dispatcher-job.cc
+++ b/src/compiler-dispatcher/compiler-dispatcher-job.cc
@@ -69,6 +69,13 @@ void CompilerDispatcherJob::PrepareToParseOnMainThread() {
   parse_info_->set_hash_seed(isolate_->heap()->HashSeed());
   parse_info_->set_unicode_cache(unicode_cache_.get());
   parser_.reset(new Parser(parse_info_.get()));
+  Scope* script_scope = parser_->NewScriptScope();
+  parse_info_->set_script_scope(script_scope);
+  script_scope = Scope::DeserializeScopeChain(
+      isolate_, zone_.get(), function_->context(), script_scope,
+      parse_info_->ast_value_factory(),
+      Scope::DeserializationMode::kDeserializeOffHeap);
+  parser_->set_original_scope(script_scope);
   status_ = CompileJobStatus::kReadyToParse;
 }