Move ReadFileToString to the base namespace.

chrome/browser/chromeos/login/managed/locally_managed_user_login_flow.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/managed/locally_managed_user_login_flow.h"
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/prefs/pref_registry_simple.h"
@@ skipping 12 matching lines @@
 using content::BrowserThread;
 
 namespace chromeos {
 
 namespace {
 
 std::string LoadSyncToken() {
   std::string token;
   base::FilePath token_file =
       file_util::GetHomeDir().Append(kManagedUserTokenFilename);
-  if (!file_util::ReadFileToString(token_file, &token)) {
+  if (!base::ReadFileToString(token_file, &token)) {
     return std::string();
   }
   return token;
 }
 
 } // namespace
 
 LocallyManagedUserLoginFlow::LocallyManagedUserLoginFlow(
     const std::string& user_id)
     : ExtendedUserFlow(user_id),
@@ skipping 50 matching lines @@
         base::Bind(&LoadSyncToken),
         base::Bind(
              &LocallyManagedUserLoginFlow::OnSyncSetupDataLoaded,
              weak_factory_.GetWeakPtr()));
   } else {
     ConfigureSync(token);
   }
 }
 
 }  // namespace chromeos