Move ASCIIToWide and ASCIIToUTF16 to utf_string_conversions.h. I've found it...

base/native_library_linux.cc

Index: base/native_library_linux.cc
===================================================================
--- base/native_library_linux.cc	(revision 54020)
+++ base/native_library_linux.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -8,7 +8,7 @@
 
 #include "base/file_path.h"
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
 
 namespace base {