Use a direct include of utf_string_conversions.h in chrome/browser/, part 3.

chrome/browser/policy/configuration_policy_pref_store.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/policy/configuration_policy_pref_store.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/prefs/pref_value_map.h"
 #include "base/string16.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
 #include "chrome/browser/policy/configuration_policy_handler_list.h"
 #include "chrome/browser/policy/policy_error_map.h"
 #include "content/public/browser/browser_thread.h"
 #include "policy/policy_constants.h"
 
 using content::BrowserThread;
 
 namespace policy {
@@ skipping 122 matching lines @@
   // issue during startup.
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&LogErrors,
                                      base::Owned(errors.release())));
 
   return prefs.release();
 }
 
 }  // namespace policy