Add utf_string_conversions to base namespace.

chrome/browser/chromeos/login/version_info_updater.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/chromeos/login/version_info_updater.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 141 matching lines @@
             boot_times.system,
             boot_times.chrome);
   } else {
     boot_times_text =
         base::StringPrintf(
             kBootTimesNoChromeExec,
             boot_times.total,
             boot_times.pre_startup,
             boot_times.system);
   }
-  // Use UTF8ToWide once this string is localized.
+  // Use base::UTF8ToWide once this string is localized.
   if (delegate_)
     delegate_->OnBootTimesLabelTextUpdated(boot_times_text);
 }
 
 void VersionInfoUpdater::OnStoreLoaded(policy::CloudPolicyStore* store) {
   UpdateEnterpriseInfo();
 }
 
 void VersionInfoUpdater::OnStoreError(policy::CloudPolicyStore* store) {
   UpdateEnterpriseInfo();
 }
 
 void VersionInfoUpdater::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   if (type == chrome::NOTIFICATION_SYSTEM_SETTING_CHANGED)
     UpdateEnterpriseInfo();
   else
     NOTREACHED();
 }
 
 }  // namespace chromeos