Introduce --zap-cpp-pointers (off by default)

src/type-info.h

Index: src/type-info.h
diff --git a/src/type-info.h b/src/type-info.h
index d767a297c6d1d6465e0a21deeae31d693add22b8..ff4a54257520c0139a574b52c25c9f64fa65a343 100644
--- a/src/type-info.h
+++ b/src/type-info.h
@@ -93,9 +93,8 @@ class TypeFeedbackOracle: public ZoneObject {
   void BuildDictionary(Handle<Code> code);
   void GetRelocInfos(Handle<Code> code, ZoneList<RelocInfo>* infos);
   void CreateDictionary(Handle<Code> code, ZoneList<RelocInfo>* infos);
-  void RelocateRelocInfos(ZoneList<RelocInfo>* infos,
-                          Code* old_code,
-                          Code* new_code);
+  void RelocateRelocInfos(ZoneList<RelocInfo>* infos, Address old_code_address,
+                          Address new_code_address);
   void ProcessRelocInfos(ZoneList<RelocInfo>* infos);
 
   // Returns an element from the backing store. Returns undefined if