Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/sync_file_system/local/local_file_sync_service_unittest.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 <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/location.h"
@@ skipping 200 matching lines @@
 // are also in content_unittest:LocalFileSyncContextTest.
 TEST_F(LocalFileSyncServiceTest, RemoteSyncStepsSimple) {
   const FileSystemURL kFile(file_system_->URL("file"));
   const FileSystemURL kDir(file_system_->URL("dir"));
   const char kTestFileData[] = "0123456789";
   const int kTestFileDataSize = static_cast<int>(arraysize(kTestFileData) - 1);
 
   base::FilePath local_path;
   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &local_path));
   ASSERT_EQ(kTestFileDataSize,
-            file_util::WriteFile(local_path, kTestFileData, kTestFileDataSize));
+            base::WriteFile(local_path, kTestFileData, kTestFileDataSize));
 
   // Run PrepareForProcessRemoteChange for kFile.
   SyncFileMetadata expected_metadata;
   expected_metadata.file_type = SYNC_FILE_TYPE_UNKNOWN;
   expected_metadata.size = 0;
   PrepareForProcessRemoteChange(kFile, FROM_HERE,
                                 SYNC_STATUS_OK,
                                 expected_metadata);
 
   // Run ApplyRemoteChange for kFile.
@@ skipping 495 matching lines @@
   all_origins.insert(kOrigin2);
   all_origins.insert(kOrigin3);
   while (!all_origins.empty()) {
     ASSERT_TRUE(NextOriginToProcess(&origin));
     ASSERT_TRUE(ContainsKey(all_origins, origin));
     all_origins.erase(origin);
   }
 }
 
 }  // namespace sync_file_system