Add utf_string_conversions to base namespace.

chrome/browser/policy/browser_policy_connector.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/browser_policy_connector.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 385 matching lines @@
     L"live\\.com",
     L"mail\\.ru",
     L"msn\\.com",
     L"qq\\.com",
     L"yahoo(\\.co|\\.com|)\\.[^.]+", // yahoo.com, yahoo.co.uk, yahoo.com.tw
     L"yandex\\.ru",
   };
   const string16 domain =
       UTF8ToUTF16(gaia::ExtractDomainName(gaia::CanonicalizeEmail(username)));
   for (size_t i = 0; i < arraysize(kNonManagedDomainPatterns); i++) {
-    string16 pattern = WideToUTF16(kNonManagedDomainPatterns[i]);
+    string16 pattern = base::WideToUTF16(kNonManagedDomainPatterns[i]);
     if (MatchDomain(domain, pattern))
       return true;
   }
   return false;
 }
 
 // static
 void BrowserPolicyConnector::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterIntegerPref(prefs::kUserPolicyRefreshRate,
                                 kDefaultPolicyRefreshRateMs);
@@ skipping 117 matching lines @@
     return new AsyncPolicyProvider(loader.Pass());
   } else {
     return NULL;
   }
 #else
   return NULL;
 #endif
 }
 
 }  // namespace policy