Move ReadFileToString to the base namespace.

chrome/browser/chromeos/policy/device_local_account_browsertest.cc

 // Copyright (c) 2013 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 <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 543 matching lines @@
     EXPECT_TRUE(error);
     EXPECT_FALSE(accept_enabled);
     return;
   }
 
   // The Terms of Service URL was valid. Verify that the screen is showing the
   // downloaded Terms of Service and the accept button is enabled.
   base::FilePath test_dir;
   ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_dir));
   std::string terms_of_service;
-  ASSERT_TRUE(file_util::ReadFileToString(
+  ASSERT_TRUE(base::ReadFileToString(
       test_dir.Append(kExistentTermsOfServicePath), &terms_of_service));
   EXPECT_EQ(terms_of_service, content);
   EXPECT_FALSE(error);
   EXPECT_TRUE(accept_enabled);
 
   // Click the accept button.
   ASSERT_TRUE(content::ExecuteScript(contents,
                                      "$('tos-accept-button').click();"));
 
   // Wait for the session to start.
   if (!IsSessionStarted()) {
     content::WindowedNotificationObserver(chrome::NOTIFICATION_SESSION_STARTED,
                                           base::Bind(IsSessionStarted)).Wait();
   }
 }
 
 INSTANTIATE_TEST_CASE_P(TermsOfServiceTestInstance,
                         TermsOfServiceTest, testing::Bool());
 
 }  // namespace policy