Introduce code serializer/deserializer.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 9722a898f36362bc80cb6e76b4efdcb56aad9d09..ac276645a1dce197b1c7470d1535a726c01b97a8 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -72,7 +72,7 @@ class ScriptData {
   // The created ScriptData won't take ownership of the data. If the alignment
   // is not correct, this will copy the data (and the created ScriptData will
   // take ownership of the copy).
-  static ScriptData* New(const char* data, int length);
+  static ScriptData* New(const char* data, int length, bool owns_store = false);
 
   virtual ~ScriptData();
   virtual int Length();