Move ReadFileToString to the base namespace.

chrome/test/perf/dom_checker_uitest.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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
@@ skipping 95 matching lines @@
   base::FilePath GetDomCheckerDir() {
     base::FilePath test_dir;
     PathService::Get(chrome::DIR_TEST_DATA, &test_dir);
     return test_dir.AppendASCII("dom_checker");
   }
 
   bool ReadExpectedResults(const std::string& failures_file,
                            std::string* results) {
     base::FilePath results_path = GetDomCheckerDir();
     results_path = results_path.AppendASCII(failures_file);
-    return file_util::ReadFileToString(results_path, results);
+    return base::ReadFileToString(results_path, results);
   }
 
   void ParseExpectedFailures(const std::string& input, ResultsSet* output) {
     if (input.empty())
       return;
 
     std::vector<std::string> tokens;
     base::SplitString(input, '\n', &tokens);
 
     std::vector<std::string>::const_iterator it = tokens.begin();
@@ skipping 123 matching lines @@
 TEST_F(DomCheckerTest, DISABLED_Http) {
   if (!CommandLine::ForCurrentProcess()->HasSwitch(kRunDomCheckerTest))
     return;
 
   ResultsList new_passes, new_failures;
   RunTest(true, &new_passes, &new_failures);
   PrintResults(new_passes, new_failures);
 }
 
 }  // namespace