Make functions on the built-in object non-writable.

src/macros.py

 # Copyright 2006-2009 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 161 matching lines @@
 
 # PropertyDescriptor return value indices - must match 
 # PropertyDescriptorIndices in runtime.cc.
 const IS_ACCESSOR_INDEX = 0;
 const VALUE_INDEX = 1;
 const GETTER_INDEX = 2;
 const SETTER_INDEX = 3;
 const WRITABLE_INDEX = 4;
 const ENUMERABLE_INDEX = 5;
 const CONFIGURABLE_INDEX = 6;
+
+# For messages.js
+# Matches Script::Type from objects.h
+const TYPE_NATIVE = 0;
+const TYPE_EXTENSION = 1;
+const TYPE_NORMAL = 2;
+
+# Matches Script::CompilationType from objects.h
+const COMPILATION_TYPE_HOST = 0;
+const COMPILATION_TYPE_EVAL = 1;
+const COMPILATION_TYPE_JSON = 2;
+
+# Matches Messages::kNoLineNumberInfo from v8.h
+const kNoLineNumberInfo = 0;