Revert of [runtime] Replace global object link with native context link in all contexts.

src/snapshot/snapshot-common.cc

Index: src/snapshot/snapshot-common.cc
diff --git a/src/snapshot/snapshot-common.cc b/src/snapshot/snapshot-common.cc
index 553d8b46fcce59d3041c0e7ead882cdc2a6f2d9d..0b7e11d1ec4a0f225e88d9d5a2bce331ad2cb222 100644
--- a/src/snapshot/snapshot-common.cc
+++ b/src/snapshot/snapshot-common.cc
@@ -82,6 +82,10 @@
   Handle<Object> result;
   if (!maybe_context.ToHandle(&result)) return MaybeHandle<Context>();
   CHECK(result->IsContext());
+  // If the snapshot does not contain a custom script, we need to update
+  // the global object for exactly two contexts: the builtins context and the
+  // script context that has the global "this" binding.
+  CHECK(EmbedsScript(isolate) || (*outdated_contexts_out)->length() == 2);
   if (FLAG_profile_deserialization) {
     double ms = timer.Elapsed().InMillisecondsF();
     int bytes = context_data.length();