Another step on the way to context snapshots. We can now refer to...

src/mksnapshot.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 146 matching lines @@
   Persistent<Context> context = v8::Context::New();
   ASSERT(!context.IsEmpty());
   // Make sure all builtin scripts are cached.
   { HandleScope scope;
     for (int i = 0; i < i::Natives::GetBuiltinsCount(); i++) {
       i::Bootstrapper::NativesSourceLookup(i);
     }
   }
   context.Dispose();
   CppByteSink sink(argv[1]);
-  i::Serializer ser(&sink);
   // This results in a somewhat smaller snapshot, probably because it gets rid
   // of some things that are cached between garbage collections.
   i::Heap::CollectAllGarbage(true);
+  i::StartupSerializer ser(&sink);
   ser.Serialize();
   return 0;
 }