Make snapshots reproducible.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index e8c985048455e406c77c6b4c6814261f2cb7ab41..c56a1772312e22a2013fb0c4ec891c15ce96caa5 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5021,6 +5021,7 @@ class Code: public HeapObject {
   //   STUB               => various things, e.g. a SMI
   //   OPTIMIZED_FUNCTION => the next_code_link for optimized code list.
   DECL_ACCESSORS(type_feedback_info, Object)
+  inline Object* raw_type_feedback_info();
   inline void InitializeTypeFeedbackInfoNoWriteBarrier(Object* value);
   inline int stub_info();
   inline void set_stub_info(int info);