Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/media_galleries/fileapi/media_file_validator_browsertest.cc

 // Copyright 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/basictypes.h"
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 105 matching lines @@
         content::CreateFileSystemContextWithAdditionalProvidersForTesting(
             NULL, additional_providers.Pass(), base);
 
     move_src_ = file_system_context_->CreateCrackedFileSystemURL(
         GURL(kOrigin), fileapi::kFileSystemTypeTest,
         base::FilePath::FromUTF8Unsafe(filename));
 
     test_file_size_ = content.size();
     base::FilePath test_file = src_path.AppendASCII(filename);
     ASSERT_EQ(test_file_size_,
-              file_util::WriteFile(test_file, content.data(), test_file_size_));
+              base::WriteFile(test_file, content.data(), test_file_size_));
 
     base::FilePath dest_path = base.AppendASCII("dest_fs");
     ASSERT_TRUE(base::CreateDirectory(dest_path));
     std::string dest_fsid =
         fileapi::IsolatedContext::GetInstance()->RegisterFileSystemForPath(
             fileapi::kFileSystemTypeNativeMedia, dest_path, NULL);
 
     size_t extension_index = filename.find_last_of(".");
     ASSERT_NE(std::string::npos, extension_index);
     std::string extension = filename.substr(extension_index);
@@ skipping 133 matching lines @@
   test_file = test_file.AppendASCII("no_streams.webm");
   MoveTestFromFile("no_streams.webm", test_file, false);
 }
 
 IN_PROC_BROWSER_TEST_F(MediaFileValidatorTest, ValidVideo) {
   base::FilePath test_file = GetMediaTestDir();
   ASSERT_FALSE(test_file.empty());
   test_file = test_file.AppendASCII("bear-320x240-multitrack.webm");
   MoveTestFromFile("multitrack.webm", test_file, true);
 }