Add utf_string_conversions to base namespace.

chrome/installer/setup/setup_util.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.
 //
 // This file declares util functions for setup project.
 
 #include "chrome/installer/setup/setup_util.h"
 
 #include <windows.h>
 
@@ skipping 120 matching lines @@
 
   scoped_ptr<Version> max_version(new Version("0.0.0.0"));
   bool version_found = false;
 
   while (!version_enum.Next().empty()) {
     file_util::FileEnumerator::FindInfo find_data = {0};
     version_enum.GetFindInfo(&find_data);
     VLOG(1) << "directory found: " << find_data.cFileName;
 
     scoped_ptr<Version> found_version(
-        new Version(WideToASCII(find_data.cFileName)));
+        new Version(base::WideToASCII(find_data.cFileName)));
     if (found_version->IsValid() &&
         found_version->CompareTo(*max_version.get()) > 0) {
       max_version.reset(found_version.release());
       version_found = true;
     }
   }
 
   return (version_found ? max_version.release() : NULL);
 }
 
@@ skipping 193 matching lines @@
 }
 
 ScopedTokenPrivilege::~ScopedTokenPrivilege() {
   if (is_enabled_ && previous_privileges_.PrivilegeCount != 0) {
     ::AdjustTokenPrivileges(token_, FALSE, &previous_privileges_,
                             sizeof(TOKEN_PRIVILEGES), NULL, NULL);
   }
 }
 
 }  // namespace installer