Include what you use for the preparser.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index f17bac2eac81ff399c3ac535040be7dee0a2f25c..1403820a4b7f7a0a8ea3d52148f3888c9c713b25 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 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:
@@ -28,8 +28,13 @@
 #ifndef V8_PREPARSER_H
 #define V8_PREPARSER_H
 
-#include "token.h"
+#include "globals.h"
+#include "hashmap.h"
+#include "list-inl.h"
+#include "preparse-data.h"
 #include "scanner.h"
+#include "token.h"
+#include "utils-inl.h"
 
 namespace v8 {