Make accessors for oddball objects return Oddball* instead of Object*.

src/type-info.h

 // Copyright 2011 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 198 matching lines @@
 class CompareOperation;
 class CompilationInfo;
 class CountOperation;
 class Property;
 class SmallMapList;
 class UnaryOperation;
 
 
 class TypeFeedbackOracle BASE_EMBEDDED {
  public:
-  TypeFeedbackOracle(Handle<Code> code, Handle<Context> global_context);
+  TypeFeedbackOracle(Handle<Code> code,
+                     Handle<Context> global_context,
+                     Isolate* isolate);
 
   bool LoadIsMonomorphicNormal(Property* expr);
   bool LoadIsMegamorphicWithTypeInfo(Property* expr);
   bool StoreIsMonomorphicNormal(Expression* expr);
   bool StoreIsMegamorphicWithTypeInfo(Expression* expr);
   bool CallIsMonomorphic(Call* expr);
 
   Handle<Map> LoadMonomorphicReceiverType(Property* expr);
   Handle<Map> StoreMonomorphicReceiverType(Expression* expr);
 
@@ skipping 45 matching lines @@
                           byte* old_start,
                           byte* new_start);
   void ProcessRelocInfos(ZoneList<RelocInfo>* infos);
   void ProcessTargetAt(Address target_address, unsigned ast_id);
 
   // Returns an element from the backing store. Returns undefined if
   // there is no information.
   Handle<Object> GetInfo(unsigned ast_id);
 
   Handle<Context> global_context_;
+  Isolate* isolate_;
   Handle<NumberDictionary> dictionary_;
 
   DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPE_INFO_H_