Move Copy* into the base namespace.

chrome/browser/prefs/chrome_pref_service_unittest.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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_registry_simple.h"
@@ skipping 75 matching lines @@
   base::FilePath data_dir_;
   // A message loop that we can use as the file thread message loop.
   base::MessageLoop message_loop_;
 };
 
 // Verifies that ListValue and DictionaryValue pref with non emtpy default
 // preserves its empty value.
 TEST_F(ChromePrefServiceUserFilePrefsTest, PreserveEmptyValue) {
   base::FilePath pref_file = temp_dir_.path().AppendASCII("write.json");
 
-  ASSERT_TRUE(file_util::CopyFile(
+  ASSERT_TRUE(base::CopyFile(
       data_dir_.AppendASCII("read.need_empty_value.json"),
       pref_file));
 
   PrefServiceMockBuilder builder;
   builder.WithUserFilePrefs(pref_file,
                             message_loop_.message_loop_proxy().get());
   scoped_refptr<user_prefs::PrefRegistrySyncable> registry(
       new user_prefs::PrefRegistrySyncable);
   scoped_ptr<PrefServiceSyncable> prefs(builder.CreateSyncable(registry.get()));
 
@@ skipping 79 matching lines @@
   const char kDefaultFont[] = "Times";
 #elif defined(OS_CHROMEOS)
   const char kDefaultFont[] = "Tinos";
 #else
   const char kDefaultFont[] = "Times New Roman";
 #endif
   EXPECT_EQ(ASCIIToUTF16(kDefaultFont),
             webkit_prefs.standard_font_family_map[prefs::kWebKitCommonScript]);
   EXPECT_TRUE(webkit_prefs.javascript_enabled);
 }