Convert base dependencies to use sys_string_conversions instead of the ICU...

base/platform_file_posix.cc

Index: base/platform_file_posix.cc
===================================================================
--- base/platform_file_posix.cc	(revision 28166)
+++ base/platform_file_posix.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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.
 
@@ -9,7 +9,7 @@
 #include <sys/stat.h>
 
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
 
 namespace base {