Update references to global object after deserializing context.

src/snapshot.h

Index: src/snapshot.h
diff --git a/src/snapshot.h b/src/snapshot.h
index 25a07cdd97766eeadf00798fc8b38573a9910cad..04c7ba6e7a8ea9f7ac1cab7c55d6e03eb47432f7 100644
--- a/src/snapshot.h
+++ b/src/snapshot.h
@@ -16,7 +16,8 @@ class Snapshot : public AllStatic {
   // snapshot could be found.
   static bool Initialize(Isolate* isolate);
   // Create a new context using the internal partial snapshot.
-  static Handle<Context> NewContextFromSnapshot(Isolate* isolate);
+  static MaybeHandle<Context> NewContextFromSnapshot(
+      Isolate* isolate, Handle<FixedArray>* outdated_contexts_out);
 
   static bool HaveASnapshotToStartFrom();