Special handling for inline caches in code serializer.

src/serialize.h

Index: src/serialize.h
diff --git a/src/serialize.h b/src/serialize.h
index 482bc34e5c03c47fd6bf30f7d0fe097ca9ba2cd8..47a244f7c584c9125dd11a4ffde8e2710cd2ee2f 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -637,9 +637,11 @@ class CodeSerializer : public Serializer {
   virtual void SerializeObject(Object* o, HowToCode how_to_code,
                                WhereToPoint where_to_point, int skip);
 
-  void SerializeBuiltin(Code* builtin, HowToCode how_to_code,
+  void SerializeBuiltin(int builtin_index, HowToCode how_to_code,
                         WhereToPoint where_to_point);
-  void SerializeCodeStub(Code* stub, HowToCode how_to_code,
+  void SerializeIC(Code* ic, HowToCode how_to_code,
+                   WhereToPoint where_to_point);
+  void SerializeCodeStub(uint32_t stub_key, HowToCode how_to_code,
                          WhereToPoint where_to_point);
   void SerializeSourceObject(HowToCode how_to_code,
                              WhereToPoint where_to_point);