Add utf_string_conversions to base namespace.

apps/app_host/update.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 "apps/app_host/update.h"
 
 #include <windows.h>
 #include "base/command_line.h"
 #include "base/file_version_info.h"
 #include "base/logging.h"
@@ skipping 24 matching lines @@
 const wchar_t kBinariesAppGuid[] = L"{4DC8B4CA-1BDA-483e-B5FA-D3C12E15B62D}";
 
 // Copied from google_chrome_distribution.cc.
 const wchar_t kBrowserAppGuid[] = L"{8A69D345-D564-463c-AFF1-A69D9E530F96}";
 
 // Fetches the version of the App Host, directly from the image's version
 // resource.
 Version GetAppHostVersion() {
   scoped_ptr<FileVersionInfo> version_info(
       FileVersionInfo::CreateFileVersionInfoForCurrentModule());
-  Version app_host_version(WideToASCII(version_info->product_version()));
+  Version app_host_version(base::WideToASCII(version_info->product_version()));
   DCHECK(app_host_version.IsValid());
   return app_host_version;
 }
 
 // Fetches the app version ("pv" entry) of a Google product from the
 // system-level registry, given the app GUID ("{###...###}").
 Version GetAppVersionFromRegistry(const wchar_t* app_guid) {
   HKEY root_key = HKEY_LOCAL_MACHINE;
   string16 client_key(kGoogleRegClientsKey);
   client_key.append(app_guid);
   base::win::RegKey reg_key;
   string16 version_str;
   if ((reg_key.Open(root_key, client_key.c_str(),
                     KEY_QUERY_VALUE) == ERROR_SUCCESS) &&
       (reg_key.ReadValue(kRegVersionField, &version_str) == ERROR_SUCCESS)) {
-    return Version(WideToASCII(version_str));
+    return Version(base::WideToASCII(version_str));
   }
   return Version();
 }
 
 // Calls setup.exe to update App Host, using the system-level setup.exe.
 bool LaunchAppHostUpdate() {
   // Get the path to the setup.exe.
   base::FilePath setup_exe(
       chrome_launcher_support::GetSetupExeForInstallationLevel(
           chrome_launcher_support::SYSTEM_LEVEL_INSTALLATION));
@@ skipping 21 matching lines @@
   Version app_host_version(GetAppHostVersion());
   if (app_host_version.CompareTo(new_version) < 0) {
     LOG(INFO) << "Updating App Launcher from " << app_host_version.GetString()
               << " to " << new_version.GetString();
     if (!LaunchAppHostUpdate())
       LOG(ERROR) << "Failed to launch App Launcher update.";
   }
 }
 
 }  // namespace app_host