Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/test/perf/startup_test.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/environment.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
@@ skipping 119 matching lines @@
     // these to a separator that won't trigger escapes.
     std::replace(user_data_dir_w.begin(),
                  user_data_dir_w.end(), '\\', '/');
 #endif
 
     // Rewrite prefs file.
     std::vector<base::string16> subst;
     subst.push_back(base::WideToUTF16(user_data_dir_w));
     const std::string prefs_string =
         UTF16ToASCII(ReplaceStringPlaceholders(format_string, subst, NULL));
-    EXPECT_TRUE(file_util::WriteFile(pref_path, prefs_string.c_str(),
+    EXPECT_TRUE(base::WriteFile(pref_path, prefs_string.c_str(),
                                      prefs_string.size()));
     file_util::EvictFileFromSystemCache(pref_path);
   }
 
   // Runs a test which loads |tab_count| tabs on startup, either as command line
   // arguments or, if |restore_session| is true, by using session restore.
   // |nth_timed_tab|, if non-zero, will measure time to load the first n+1 tabs.
   void RunPerfTestWithManyTabs(const char* graph, const char* trace,
                                int tab_count, int nth_timed_tab,
                                bool restore_session);
@@ skipping 322 matching lines @@
 }
 
 TEST_F(StartupTest, ProfilingScript1) {
   SetUpWithFileURL();
   SetUpWithProfiling();
   RunStartupTest("warm", "profiling_scripts1", WARM, NOT_IMPORTANT,
                  PerfUITestSuite::DEFAULT_THEME, 1, 0);
 }
 
 }  // namespace