Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

chrome/browser/browser_encoding_browsertest.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/bind.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/character_encoding.h"
 #include "chrome/browser/net/url_request_mock_util.h"
@@ skipping 115 matching lines @@
         content::BrowserContext::GetDownloadManager(browser()->profile()),
         loop_runner->QuitClosure());
     browser()->tab_strip_model()->GetActiveWebContents()->SavePage(
         full_file_name, temp_sub_resource_dir_,
         content::SAVE_PAGE_TYPE_AS_COMPLETE_HTML);
     loop_runner->Run();
 
     base::FilePath expected_file_name = ui_test_utils::GetTestFilePath(
         base::FilePath(kTestDir), expected);
 
-    EXPECT_TRUE(file_util::ContentsEqual(full_file_name, expected_file_name));
+    EXPECT_TRUE(base::ContentsEqual(full_file_name, expected_file_name));
   }
 
   virtual void SetUpOnMainThread() OVERRIDE {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     save_dir_ = temp_dir_.path();
     temp_sub_resource_dir_ = save_dir_.AppendASCII("sub_resource_files");
 
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&chrome_browser_net::SetUrlRequestMocksEnabled, true));
@@ skipping 176 matching lines @@
 
     // Dump the page, the content of dump page should be equal with our expect
     // result file.
     base::FilePath expected_result_file_name =
         base::FilePath().AppendASCII(kAutoDetectDir).
         AppendASCII(kExpectedResultDir).
         AppendASCII(kTestDatas[i].expected_result);
     SaveAndCompare(kTestDatas[i].test_file_name, expected_result_file_name);
   }
 }