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

chrome/browser/search_engines/template_url_fetcher_unittest.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/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/search_engines/template_url.h"
@@ skipping 128 matching lines @@
     const string16& keyword,
     const std::string& osdd_file_name,
     TemplateURLFetcher::ProviderType provider_type,
     bool check_that_file_exists) {
 
   if (check_that_file_exists) {
     base::FilePath osdd_full_path;
     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &osdd_full_path));
     osdd_full_path = osdd_full_path.AppendASCII(osdd_file_name);
     ASSERT_TRUE(base::PathExists(osdd_full_path));
-    ASSERT_FALSE(file_util::DirectoryExists(osdd_full_path));
+    ASSERT_FALSE(base::DirectoryExists(osdd_full_path));
   }
 
   // Start the fetch.
   GURL osdd_url = test_server_.GetURL("/" + osdd_file_name);
   GURL favicon_url;
   TemplateURLFetcherFactory::GetForProfile(
       test_util_.profile())->ScheduleDownload(
           keyword, osdd_url, favicon_url, NULL,
           new TemplateURLFetcherTestCallbacks(this), provider_type);
 }
@@ skipping 162 matching lines @@
   StartDownload(keyword, osdd_file_name,
                 TemplateURLFetcher::EXPLICIT_PROVIDER, true);
   ASSERT_EQ(0, add_provider_called_);
   ASSERT_EQ(1, callbacks_destroyed_);
 
   WaitForDownloadToFinish();
   ASSERT_EQ(1, add_provider_called_);
   ASSERT_EQ(2, callbacks_destroyed_);
   ASSERT_TRUE(last_callback_template_url_.get());
 }